Solve the problem.The function f(t) = -0.12t2 + 0.53t + 30.8 models the U.S. population in millions, ages 65 and older, where t represents years after 1990. The function g(t) = 0.55t2 + 11.89t + 105.3 models the total yearly cost of Medicare in billions of dollars, where t represents years after 1990. What does the function 
represent? Find 
(15).
A. Cost per person in thousands of dollars. $0.16 thousand
B. Cost per person in thousands of dollars. $0.03 thousand
C. Cost per person in thousands of dollars. $34.67 thousand
D. Cost per person in thousands of dollars. $8.64 thousand
Answer: C
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Solve the system.2w + x - 3y + z = -7-w + 2x + y - 2z = 35w - x + 2y + 3z = 16 w + x - 2y - z = 0
A. (4, -4, 0, 4) B. (4, -2, 3, -4) C. (-4, -3, 6, 4) D. (-2, 3, 4, 1)
Find the cost for the purchase at the last price if the commission is $4 per bond.Bond: FPCLast Price: 82.125Number Purchased: 41
A. $33,835.25 B. $82,125.00 C. $40,836.00 D. $33,671.25
Solve the problem.A projectile is thrown upward so that its distance above the ground after t seconds is 
After how many seconds does it reach its maximum height?
A. 6 sec B. 18 sec C. 24 sec D. 12 sec
Perform the indicated operations. Simplify when necessary.
A. 
B. - 
C. - 22
D. 