Find the exact value by using a half-angle identity.sin 
A. - 
B. 
C. 
D. - 
Answer: C
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Calculate the number of subsets and the number of proper subsets for the set.
A. 14; 15 B. 15; 16 C. 16; 15 D. 15; 14
Solve the problem.An investigating officer examining skid marks at the scene of an accident estimates the speed of the vehicle to have been 85 feet per second. Was the driver exceeding the 55 miles per hour speed limit?
A. Yes. The driver was traveling 58 mi./hr. B. No. The driver was traveling 47 mi./hr.
Use properties of logarithms to condense the logarithmic expression. Write the expression as a single logarithm whose coefficient is 1. Where possible, evaluate logarithmic expressions.5 log x + 2 log y
A. 7 log(xy) B. log(xy)7 C. 10 log(xy) D. log(x5y2)
Solve the problem.The distance an object falls when dropped from a tower varies directly as the square of the time it falls. If the object falls 144 feet in 3 seconds, how far will it fall in 5 seconds?
A. 450 ft B. 350 ft C. 400 ft D. 80 ft