Solve the inequality using a sign chart.-7x2 - 6 ? -23x
A. x ? 
B. x > 3
C. 
? x ? 3
D. x ? 
or x ? 3
Answer: C
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Find the area of the polygon.
A. A = 397 m2 B. A = 407 m2 C. A = 412 m2 D. A = 75 m2
Solve the problem.The sales tax rate in one state is 5.75%. How much tax will be charged on a purchase of 6 chairs at $63 apiece? Round your answer to the nearest cent.
A. $217.35 B. $21.74 C. $3.62 D. $66.62
Solve the problem.A formula relating an athlete's vertical leap V, in inches, to hang time T, in seconds, is V= 48T2. A professional basketball player has a vertical leap of 32 inches. What is his hang time? Round your answer to the nearest tenth of a second.
A. 0.9 sec B. 0.5 sec C. 0.7 sec D. 0.8 sec
Choose the correct response.What is the speed of a plane that travels at a rate of 580 mph into a wind of r mph?
A. r - 580 mph
B. 580 - r mph
C. 580 + r mph
D. 
mph