Rewrite without rational exponents, and simplify, if possible.2561/4
A. 64
B. 1024
C. 4
D. 16
Answer: C
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Solve the problem. Use 3.14 for ?.A rectangular Persian carpet has a perimeter of 168 inches. The length of the carpet is 18 inches more than the width. What are the dimensions of the carpet?
A. 75 in. by 93 in. B. 51 in.by 69 in. C. 33 in. by 51 in. D. 66 in. by 84 in.
Write as an improper fraction.18
A. 30
B. 
C. 12
D. 216
Solve the problem.If f(x, y) = (3000ey)/(1 + 
/2) represents the population density of a planar region on Earth, where x and y are measured in miles, find the number of people within the rectangle -7 ? x ? 7 and -2 ? y ? 0.
A. 6000(1 - e-2) ln 4 ? 11,399
B. 3000(1 - e-2) ln 
? 3902
C. 12,000(1 - e-2) ln 
? 15,606
D. 6000(1 - e-2) ln 
? 7803
Solve.The concentration of a certain gas molecule in the atmosphere serves as an indicator of industrial air pollution. The data in the following table show the relationship of the estimated concentration of the molecule in the atmosphere, in parts per billion (ppb), to the year.
Determine the linear, quadratic, or cubic function that best fits the data.
A. f(x) = 0.00001x3 - 0.003x2 + 0.14x + 2.16 B. f(x) = 0.002x + 2.90 C. f(x) = -0.003x2 + 0.12x + 2.19 D. f(x) = -0.002x2 + 0.12x + 2.19