Solve. If necessary, round percents to the nearest tenth, dollar amounts to the nearest cent, and all other numbers to the nearest whole.In the past ten years, the population of a city decreased from 215,000 to 
Find the percent decrease.
A. 97.7%
B. 2.3%
C. 4200%
D. 2.4%
Answer: B
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Determine the number by which both sides of the equation must be multiplied or divided, as specified, to obtain just x on the left side.0.2x = 7; multiplied
A. - 
B. 5
C. 0.2
D. 7
Solve the system.
A. (-4, 4, 1) B. (-4, 1, 4) C. (4, 1, -4) D. ?
Solve the problem.A Ferris wheel has a diameter of 340 feet and the bottom of the Ferris wheel is 8 feet above the ground. Find the equation of the wheel if the origin is placed on the ground directly below the center of the wheel, as illustrated. 
A. x2 + y2 = 28,900 B. x2 + (y - 170)2 = 115,600 C. x2 + (y - 170)2 = 28,900 D. x2 + (y - 178)2 = 28,900
The general term of a sequence is given. Determine whether the given sequence is arithmetic, geometric, or neither. If the sequence is arithmetic, find the common difference; if it is geometric, find the common ratio.an = 4n2 - 3
A. geometric, r = 4 B. arithmetic, d = -3 C. arithmetic, d = 4 D. neither