Use the formula for future value, 
to find the missing quantity.A = $5600.00; P = $4000; t = 8 years
A. r = 6%
B. r = 8%
C. r = 7%
D. r = 5%
Answer: D
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Find the length of the parametric curve defined over the given interval.x = 5 sin t - 5t cos t, y = 5cos t + 5t sin t, 0 ? t ? 
A. 
?2
B. 
?2
C. 
?
D. 
?2
Solve the problem.The length of the diagonal of a box is given by D = 
where L, W, and H are the length, width, and height of the box. Find the length of the diagonal, D, of a box that is 
long, 
high, and 
wide. Give the exact value.
A. 120 ft
B. 15 ft
C. 2
ft
D. 
ft
?Suppose the sales S (in billions of dollars per year) for Proctor & Gamble for the years 1997 through 2002 can be modeled by 
, 
where t represents the year. During which year were the sales increasing at the lowest rate?
?
A. ?Sales are increasing at the lowest rate in the year 2002. B. ?Sales are increasing at the lowest rate in the year 1997. C. ?Sales are increasing at the lowest rate in the year 1998. D. ?Sales are increasing at the lowest rate in the year 2000. E. ?Sales are increasing at the lowest rate in the year 1999.
Combine like terms.9y - 7y
A. 2 B. 4y C. 16y D. 2y