Identify the values for which the rational expression is undefined.
A. z = -7
B. z = 2
C. z = 0
D. None
Answer: C
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Find the following. Assume that letters can represent any real number.
A. 7 B. 49 C. -7 D. Not a real number
Solve the problem.An architect needs to design a rectangular room with an area of 89 ft2. What dimensions should he use in order to minimize the perimeter? Round to the nearest hundredth, if necessary.
A. 22.25 ft x 22.25 ft B. 17.8 ft x 89 ft C. 9.43 ft x 9.43 ft D. 9.43 ft x 22.25 ft
What term of the arithmetic sequence is the given number?
, 
, - 
, . . . ; - 10
A. 33 B. 38 C. 36 D. 35
Solve.The weight of an object on the Earth's surface is inversely proportional to the square of its distance from the center of the Earth. An object weighs 900 pounds on the Earth's surface. This is approximately 4000 miles from the center of the Earth. How much would this object weigh 4600 miles from the center of the Earth? (Round to the nearest tenth of a pound.)
A. 839.3 pounds B. 782.6 pounds C. 680.5 pounds D. 1190.3 pounds