D771 WGU Quantitative Literacy || 100% Errorless Answers.
What is an equation? correct answers A math statement showing two expressions are equal,
connected by an equal sign (=).
What is an expression? correct answers A math phrase without an equal sign.
Example of an equation? correct answers 8 + 3 = 11.
Example of an expression? correct answers 8 + 3.
How do you solve for an unknown in an equation? correct answers Apply the same operation to
both sides until the unknown is isolated.
What is a variable? correct answers A symbol (like x) that represents an unknown value.
What is a constant? correct answers A fixed value that does not change.
What is a coefficient? correct answers A number multiplied by a variable (in 5x, 5 is the
coefficient).
How do you multiply fractions? correct answers Multiply numerators together and denominators
together.
How do you divide fractions? correct answers Multiply by the reciprocal of the divisor.
How do you add/subtract fractions? correct answers Rewrite with a common denominator, then
add/subtract numerators.
What is a reciprocal? correct answers The flipped version of a fraction (e.g., 3/4 → 4/3).
What does percent mean? correct answers Per hundred.
How do you convert a decimal to a percent? correct answers Multiply by 100. (0.25 → 25%).
How do you convert a percent to a decimal? correct answers Divide by 100. (75% → 0.75).
How do you find 10% of a number quickly? correct answers Move the decimal one place to the
left.
Example: What is 25% of 200? correct answers 200 × 0.25 = 50.
What is a ratio? correct answers A comparison of two numbers (e.g., 2:3).
What is a rate? correct answers A ratio with different units (e.g., miles/hour).
, What is a unit rate? correct answers A rate with denominator of 1 (e.g., $2 per slice).
What is a proportion? correct answers An equation showing two ratios are equal.
How do you solve a proportion? correct answers Cross multiply and divide.
Example: 3/4 = x/12. Solve for x. correct answers x = 9.
How do you find the perimeter of a rectangle? correct answers 2 × length + 2 × width.
Example: Rectangle 10 ft by 14 ft perimeter? correct answers 48 ft.
What is the circumference of a circle? correct answers Distance around a circle.
Formula for circumference using diameter? correct answers C = π × diameter.
Formula for circumference using radius? correct answers C = 2πr.
Approximate value of π? correct answers 3.14.
What does ≈ mean? correct answers About equal to.
What is a conversion factor? correct answers A ratio that compares two equivalent values in
different units.
How do you convert 150 minutes into hours? correct answers 150 × (1 hr / 60 min) = 2.5 hours.
How do you convert inches to feet? correct answers Divide by 12.
What is a function? correct answers A relation where each input has exactly one output.
What is function notation? correct answers y = f(x).
What is a linear function? correct answers A function that forms a straight line, written as y = mx
+ b.
In y = mx + b, what does m represent? correct answers The slope (rate of change).
In y = mx + b, what does b represent? correct answers The y-intercept (starting value).
Example: $2000 setup fee + $30 per person. Function? correct answers y = 30x + 2000.
What is linear growth? correct answers Increase by the same fixed amount each step.
What is exponential growth? correct answers Increase by the same fixed percentage each step.
What is an equation? correct answers A math statement showing two expressions are equal,
connected by an equal sign (=).
What is an expression? correct answers A math phrase without an equal sign.
Example of an equation? correct answers 8 + 3 = 11.
Example of an expression? correct answers 8 + 3.
How do you solve for an unknown in an equation? correct answers Apply the same operation to
both sides until the unknown is isolated.
What is a variable? correct answers A symbol (like x) that represents an unknown value.
What is a constant? correct answers A fixed value that does not change.
What is a coefficient? correct answers A number multiplied by a variable (in 5x, 5 is the
coefficient).
How do you multiply fractions? correct answers Multiply numerators together and denominators
together.
How do you divide fractions? correct answers Multiply by the reciprocal of the divisor.
How do you add/subtract fractions? correct answers Rewrite with a common denominator, then
add/subtract numerators.
What is a reciprocal? correct answers The flipped version of a fraction (e.g., 3/4 → 4/3).
What does percent mean? correct answers Per hundred.
How do you convert a decimal to a percent? correct answers Multiply by 100. (0.25 → 25%).
How do you convert a percent to a decimal? correct answers Divide by 100. (75% → 0.75).
How do you find 10% of a number quickly? correct answers Move the decimal one place to the
left.
Example: What is 25% of 200? correct answers 200 × 0.25 = 50.
What is a ratio? correct answers A comparison of two numbers (e.g., 2:3).
What is a rate? correct answers A ratio with different units (e.g., miles/hour).
, What is a unit rate? correct answers A rate with denominator of 1 (e.g., $2 per slice).
What is a proportion? correct answers An equation showing two ratios are equal.
How do you solve a proportion? correct answers Cross multiply and divide.
Example: 3/4 = x/12. Solve for x. correct answers x = 9.
How do you find the perimeter of a rectangle? correct answers 2 × length + 2 × width.
Example: Rectangle 10 ft by 14 ft perimeter? correct answers 48 ft.
What is the circumference of a circle? correct answers Distance around a circle.
Formula for circumference using diameter? correct answers C = π × diameter.
Formula for circumference using radius? correct answers C = 2πr.
Approximate value of π? correct answers 3.14.
What does ≈ mean? correct answers About equal to.
What is a conversion factor? correct answers A ratio that compares two equivalent values in
different units.
How do you convert 150 minutes into hours? correct answers 150 × (1 hr / 60 min) = 2.5 hours.
How do you convert inches to feet? correct answers Divide by 12.
What is a function? correct answers A relation where each input has exactly one output.
What is function notation? correct answers y = f(x).
What is a linear function? correct answers A function that forms a straight line, written as y = mx
+ b.
In y = mx + b, what does m represent? correct answers The slope (rate of change).
In y = mx + b, what does b represent? correct answers The y-intercept (starting value).
Example: $2000 setup fee + $30 per person. Function? correct answers y = 30x + 2000.
What is linear growth? correct answers Increase by the same fixed amount each step.
What is exponential growth? correct answers Increase by the same fixed percentage each step.
