Find the amplitude of the function. y = 4 sin 3x
A. 
B. 4
C. 
D. 
Answer: B
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Use a finite approximation to estimate the area under the graph of the given function on the stated interval as instructed.f(x) = x2 between x = 1 and x = 5 using a right sum with four rectangles of equal width.
A. 69 B. 54 C. 41 D. 30
Use the Consumer Price Index below to answer the question.
In 1996, the federal minimum hourly wage was $3.50. Convert this to 2000 dollars. If necessary, round values to the nearest cent.
A. $3.84 B. $3.19 C. $3.95 D. $3.30
Solve for the indicated variable.P = 2l + 2w, for w
A. w = 
B. w = 
C. w = P - 2l - 2
D. w = 
- 2l
Find the values of x for which the given function is concave up, the values of x for which the function is concave down, and any points of inflection.y = 7x - x3
A. Concave up for x < 0, and x > 1, concave down for 0 < x < 1, points of inflection at (0, 0), (1, 7) B. Concave up for x < 0, concave down for x > 0, point of inflection at (0, 0) C. Concave down for all x, no points of inflection D. Concave down for x < 0, concave up for x > 0, point of inflection at (0, 0)