Determine the value of the variable so that the equality is a proportion.
= 
A. 13
B. 0.04
C. 26
D. 6.5
Answer: D
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An expression that occurs in calculus is given. Write the expression as a single quotient in which only positive exponents and/or radicals appear.8x3/2(x3 + x2) - 10x5/2 - 10x3/2
A. 8x3/2(x3 - 1) + 8x3 - 2x3/2(x - 1) B. 2x3/2(x + 1)(4x2 - 5) C. x3/2(x - 1)[8(x2 - 1) - 2] + 8x3 D. 8x3/2(x + 1)(4x2 - 5)
Divide. If a repeating decimal is obtained, use notation such as 0.
, 0.
, or 0.
.3
A. 3.2
B. 3.
C. 3.
D. 3.25
Use an equation to solve the percent problem.What number is 41% of 20?
A. 8.2 B. 820 C. 8200 D. 82
Consider the data in the following table regarding the median age of women at their first marriage in the U.S. (U.S. Bureau of the Census.)
(a) Find the regression line y = mx + b.
(b) Use the regression line to predict the median age of women at their first marriage in 2020.