Solve.When Maria finished medical school she owed $42,000 in student loans. She repaid 
of the total amount within two years of graduating. How much did she repay within two years of graduating?
A. $33,600
B. $30,240
C. $3360
D. $36,960
Answer: A
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For the functions f(x) and g(x), determine the domain of (f ? g)(x) (the product of f and g).f(x) = 
, g(x) = 
A. {x ? x is a real number} B. {x ? x is a real number and x ? 3} C. {x ? x is a real number and x ? -3 and x ? -7} D. {x ? x is a real number and x ? 3 and x ? 7}
Find the mean. Round to the nearest tenth unless otherwise stated.Number of days spent working out in a month: 14, 11, 6, 19, 18, 4, 13, 3
A. 10 B. 12.6 C. 17 D. 11
Find the average rate of change for the function between the given values.f(x) = 
; from 4 to 7
A. - 
B. 
C. 7
D. 2
Solve the problem.The function f(t) = -0.12t2 + 0.53t + 30.4 models the U.S. population in millions, ages 65 and older, where t represents years after 1990. The function g(t) = 0.53t2 + 11.9t + 106.4 models the total yearly cost of Medicare in billions of dollars, where t represents years after 1990. What does the function 
represent? Find 
(10).
A. Cost per person in thousands of dollars. $11.75 thousand B. Cost per person in thousands of dollars. $9.94 thousand C. Cost per person in thousands of dollars. $0.09 thousand D. Cost per person in thousands of dollars. $0.17 thousand