Graph the system of inequalities.x2 + y2 ? 9y - x2 > 0
A. 
B. 
C. 
D. 
Answer: D
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For the given pair of functions, find the requested function.f(x) = 4x - 2, g(x) = -7x2 - 9x + 6; (f - g)(x)
A. 7x2 + 13x - 8 B. -7x2 + 13x + 8 C. 7x2 - 5x - 8 D. -7x2 - 5x + 4
Solve the compound inequality and graph the solution set on a number line. Except for the empty set, express the solution set in interval notation.-16 ? -4x + 4 < -12
A. [4, 5)
B. ?
C. (4, 5]
D. (-?, 4] ? (5, ?)
Solve.Find the area of a trapezoid with an altitude of 22 inches and whose bases are 13 inches and 21 inches.
A. 374 in.2 B. 231 in.2 C. 748 in.2 D. 136.5 in.2
Solve. If necessary, round percents to the nearest tenth, dollar amounts to the nearest cent, and all other numbers to the nearest whole.Find the amount of increase and the percent increase if the original amount is 18 and the new amount is 36.
A. 18; 95% B. 18; 110% C. 18; 200% D. 18; 100%