Solve the problem.The Smith family is planning a 480-mile trip. They plan to travel at an average speed of 40 miles per hour. To determine the number of hours the trip will take, solve the equation 480 = 40t.
A. 13 hr.
B. 14 hr.
C. 12 hr.
D. 11 hr.
Answer: C
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Use a graphing calculator or computer to determine which of the given viewing windows displays the most appropriate graph of the specified function.f(x) = x2 + 
cos 80x
A. [-2, 2] by [-1, 1] B. [-0.6, 0.6] by [-0.1, 0.6] C. [-10, 10] by [-10, 10] D. [-0.1, 0.1] by [-0.1, 0.1]
Write the first four terms of the sequence.an = 2n
A. a1 = 4, a2 = 8, a3 = 16, a4 = 32 B. a1 = 1, a2 = 4, a3 = 9, a4 = 16 C. a1 = 1, a2 = 2, a3 = 4, a4 = 8 D. a1 = 2, a2 = 4, a3 = 8, a4 = 16
Solve the problem.A rare baseball card was sold in 1990 for $215,000. The card was then resold in 1998 for $491,000. Assume that the card's value increases exponentially, and find an exponential function V(t) that fits the data. (Round decimals to three places.)
A. V(t) = 215,000e0.775t, where t is the number of years after 1990. B. V(t) = 215e0.775t, where t is the number of years after 1990. C. V(t) = 215,000e0.103t, where t is the number of years after 1990. D. V(t) = 215e0.103t, where t is the number of years after 1990.
Perform the indicated operation and simplify.
+ 
A. 
B. 
C. 
D. 