Find the derivative.f(x) = 
A. 
B. 
C. 
D. 
Answer: B
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Solve the formula for the indicated letter. Assume that all variables represent nonnegative numbers.A = 
?r2 for r
A. r = ±3
B. r = ±
C. r = ±
D. r = ± 
Find a rectangular equation for the curve and describe the curve.x = 
, y = t - 3; -3 ? t ? 3
A. y = x3 - 3; portion of a cubic graph B. y = (x + 3)3; portion of a cubic graph C. y = (x - 3)3; portion of a cubic graph D. y = x3 + 3; portion of a cubic graph
Solve the problem.A square has an area of 49 square inches. If the same amount is added to the length and removed from the width, the resulting rectangle has an area of 45 square inches. Find the dimensions of the rectangle.
A. 3 in. by 4 in. B. 5 in. by 9 in. C. 4 in. by 9 in. D. 5 in. by 10 in.
Solve.A rectangular sign is being designed so that the length of its base, in feet, is 8 feet less than 4 times the height, h. Express the area of the sign as a function of h.
A. A(h) = -8h + 4h2 B. A(h) = -8h + h2 C. A(h) = -8h2 + 2h D. A(h) = 8h - 2h2