Find the area of the surface generated by revolving the curve about the indicated axis. x = sin t, y = 7 + cos t, 0 ? t ? 2?; x-axis
A. 7?2
B. 42?2
C. 28?2
D. 21?2
Answer: C
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Find the vertex of the parabola.g(x) = x2 - 5x + 12
A. 
B. 
C. 
D. 
Translate the question into an equation. Do not solve.71% of 43 is what number?
A. 71% ? 43 = n B. 71 ? 43 = n C. 71% = 43 ? n D. 71% ? n = 43
Solve the problem.The motion of a projectile that is fired at a 45° angle with the horizontal is given by x = v0
t, 
for t in 
Suppose a projectile is fired with an initial velocity of 450 feet per second at an angle of 45° with the horizontal. Find (a) the time when it reaches maximum altitude (b) the maximum altitude.
A. (a) 39.8 sec (b) 3164 ft B. (a) 9.9 sec (b) 1582 ft C. (a) 19.9 sec (b) 6328 ft D. (a) 19.9 sec (b) 1582 ft
Write the new function.The linear function f(x) = 72.66x + 1038 provides an approximation of the value (in dollars) of an account opened on January 1, 1988, in the amount of $1038 and earning 7% simple interest, where x = 0 represents January 1, 1988, x = 1 represents January 1, 1989, x = 2 represents January 1, 1990, and so on. Write a new function, g(x), that yields the same f(x)-values when the exact year number is entered.
A. g(x) = 72.66(x - 1988) + 1038 B. g(x) = 72.66(1988 - x) + 1038 C. g(x) = 72.66(x - 1989) + 1038 D. g(x) = 72.66(1989 - x) + 1038