Solve the problem.A car on a test track described by x = 0.40t3, y = 19t - 1.7t2, where x and y are measured in meters and t is in seconds. Find the acceleration of the car at 
A. 5.1 m/s2, 340.5°
B. 10 m/s2, 340.5°
C. 10 m/s2, 160.5°
D. 5.1 m/s2, 160.5°
Answer: B
You might also like to view...
Factor the trinomial completely.12x4 + 42x3 - 24x2
A. (12x2 - 6)(x2 + 4) B. 6x(2x + 1)(x - 4) C. x2(2x - 1)(6x + 24) D. 6x2(2x - 1)(x + 4)
Express as a single logarithm and, if possible, simplify.
logax + 
loga y
A. 
loga xy
B. loga (x2/7 y1/5)
C. loga (x2/7 + y1/5)
D. loga (xy2/35)
Graph the function. State whether it is increasing, decreasing, or constant..g(x) = 4x - 6
A. increasing
B. decreasing
C. increasing
D. decreasing
Suppose that in the loan described, the borrower made a larger payment, as indicated. Calculate (a) the time needed to pay off the loan, (b) the total amount of the payments, and (c) the amount of interest saved, compared with the original loan and payments.$140,000; 8% compounded quarterly; 15 quarterly payments; with larger payment of $20,000.
A. (a) 7 quarters (b) $140,000 (c) $16,657.32 B. (a) 7 quarters (b) $130,248.91 (c) $16,560.32 C. (a) 8 quarters (b) $146,841.23 (c) $16,592.32 D. (a) 8 quarters (b) $160,000 (c) $16,715.32