Add or subtract. Write the answer in lowest terms.
- 
A. 
B. 
C. 
D. 
Answer: A
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Find an approximate equation y = abx of the exponential curve that contains the given pair of points. Round the values of a and/or b to two decimal places, if necessary.(0, 5.2) and (3, 87.2)
A. y = 5.2(3.07)x B. y = 5.2(50.31)x C. y = 5.2(2.56)x D. y = 5.2(5.59)x
Solve the problem.A trough is to be made with an end of the dimensions shown. The length of the trough is to be 
long. Only the angle ? can be varied. What value of ? will maximize the trough's volume?
A. 8° B. 30° C. 52° D. 32°
Determine the indicated function.A ball is to be made to contain a volume V. Express the total surface area A of the ball as a function of V and the radius r of the ball.
A. A = 
B. A = 
C. A = 3Vr
D. A = 
Write or illustrate the number in the indicated form.1421; Express in expanded form.
A. 1 ? 103 + 4 ? 102 + 2 ? 101 + 1 ? 100 B. 1 ? 101 + 4 ? 102 + 2 ? 103 + 1 ? 104 C. 1 ? 100 + 4 ? 101 + 2 ? 102 + 1 ? 103 D. 1 ? 104 + 4 ? 103 + 2 ? 102 + 1 ? 101