MTH/216T: QUANTITATIVE REASONING II: WEEK 3: MIDTERM EXAM

MTH/216T: QUANTITATIVE REASONING II: WEEK 3: MIDTERM EXAM 1. Given a function described as equation y = 3x + 4, what is y when x is 1, 2, and 3? A) 7, 8, 9 B) 3, 7, 11 C) 3, 6, 9 D) 7, 10, 13 Answer: D) 7, 10, 13 2. Given this equation for converting temperature from Celsius (c) to Fahrenheit (f): f = (9/5)c + 32 What is f when c is 30? A) 77 B) 86 C) 95 D) 104 Answer: B) 86 3. What are m and b in the linear equation, using the common meanings of m and b? 1 + 4x + 6 - x = y A) m is 3, b is 7 B) m is 4, b is 6 C) m is 7, b is 3 D) m is 6, b is 4 Answer: A) m is 3, b is 7 4. The figure below shows costs for a current home mortgage versus a refinanced home mortgage. Refinancing has initial costs, but results in a lower monthly payment. Which best describes the lines? A) The blue line is for refinancing, which starts cheaper but eventually is costlier B) The blue line is for refinancing, which starts costlier but eventually is cheaper C) The orange line is for refinancing, which starts cheaper but eventually is costlier D) The orange line is for refinancing, which starts costlier but eventually is cheaper Answer: D) The orange line is for refinancing, which starts costlier but eventually is cheaper