Solve the problem.The function f(t) = -0.12t2 + 0.52t + 30.5 models the U.S. population in millions, ages 65 and older, where t represents years after 1990. The function g(t) = 0.55t2 + 11.08t + 106.4 models the total yearly cost of Medicare in billions of dollars, where t represents years after 1990. What does the function 
(t) represent? Find 
(15).
A. Cost per person in thousands of dollars. $0.16 thousand
B. Cost per person in thousands of dollars. $35.08 thousand
C. Cost per person in thousands of dollars. $0.03 thousand
D. Cost per person in thousands of dollars. $8.33 thousand
Answer: B
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Solve the problem.Together, JoAnne and Josh drove 968 miles to take the family on a vacation. Josh drove 185 miles more than twice the number of miles that JoAnne drove. How many miles did each of them drive?
A. JoAnne: 522 miles, Josh: 446 miles B. JoAnne: 261 miles, Josh: 707 miles C. JoAnne: 211 miles, Josh: 757 miles D. JoAnne: 446 miles, Josh: 522 miles
Determine whether the given quadratic function has a minimum value or maximum value. Then find the minimum or maximum value and determine where it occurs.f(x) = 2x2 + 2x - 1
A. Maximum is - 
at x = - 
.
B. Minimum is - 
at x = - 
.
C. Minimum is - 
at x = - 
.
D. Maximum is - 
at x = - 
.
Evaluate.
2
A. 
B. 
C. 
D. 
Solve. Express the result in scientific notation. If necessary, round the decimal factor to two decimal places.Approximately 8 × 103 employees of a certain company average $30,000 each year in salary. What is the total amount earned by all the employees of this company per year?
A. $24 × 109 B. $2.4 × 108 C. $24 × 108 D. $2.4 × 109