MATH 3339 TEST 2 STUDY GUIDE
QUESTIONS AND SOLUTIONS 2026
CORRECT ANSWERS GRADED A+
⩥ slope formula. Answer: (y₂- y₁) / (x₂- x₁)
⩥ integers. Answer: ..., -3, -2, -1, 0, 1, 2, 3, ...
⩥ rationals. Answer: fractions (anything expessable as a ratio of
integers)
⩥ reals. Answer: integers, rationals, plus special #s (like √2 or pi)
⩥ order of opperations. Answer: PEMDAS (Parentheses / Exponents /
Multiply / Divide / Add / Subtract)
⩥ Arithmetic Sequences. Answer: t₁, t₁+ d, t₁+2d, ...
⩥ Geometric Sequences. Answer: t₁, t₁· r, t₁· r², ...
⩥ Factors. Answer: ex. factors of 52 are 2, 4, 13, and 26
, ⩥ Multiples. Answer: ex. multiples of 20 are 40, 60, 80, 100, ...
⩥ percentages. Answer: part = (percent / 100) x whole
⩥ average. Answer: average = sum of terms / number of terms
⩥ average speed. Answer: average speed = total distance / total time
⩥ sum. Answer: sum = average x (number of terms)
⩥ mode. Answer: mode = value in the list that appears most often
⩥ median. Answer: median = middle value in the list
⩥ fundamental counting principle. Answer: if an event can happen in N
ways, and another, independent event can happen in M ways, then both
events together can happen in N x M ways.
⩥ probability. Answer: probability = number of desired outcomes /
number of total outcomes
⩥ adding exponents. Answer: x^a · x^b = x^(a+b)
QUESTIONS AND SOLUTIONS 2026
CORRECT ANSWERS GRADED A+
⩥ slope formula. Answer: (y₂- y₁) / (x₂- x₁)
⩥ integers. Answer: ..., -3, -2, -1, 0, 1, 2, 3, ...
⩥ rationals. Answer: fractions (anything expessable as a ratio of
integers)
⩥ reals. Answer: integers, rationals, plus special #s (like √2 or pi)
⩥ order of opperations. Answer: PEMDAS (Parentheses / Exponents /
Multiply / Divide / Add / Subtract)
⩥ Arithmetic Sequences. Answer: t₁, t₁+ d, t₁+2d, ...
⩥ Geometric Sequences. Answer: t₁, t₁· r, t₁· r², ...
⩥ Factors. Answer: ex. factors of 52 are 2, 4, 13, and 26
, ⩥ Multiples. Answer: ex. multiples of 20 are 40, 60, 80, 100, ...
⩥ percentages. Answer: part = (percent / 100) x whole
⩥ average. Answer: average = sum of terms / number of terms
⩥ average speed. Answer: average speed = total distance / total time
⩥ sum. Answer: sum = average x (number of terms)
⩥ mode. Answer: mode = value in the list that appears most often
⩥ median. Answer: median = middle value in the list
⩥ fundamental counting principle. Answer: if an event can happen in N
ways, and another, independent event can happen in M ways, then both
events together can happen in N x M ways.
⩥ probability. Answer: probability = number of desired outcomes /
number of total outcomes
⩥ adding exponents. Answer: x^a · x^b = x^(a+b)
