Identify and graph the polar equation.r2 = 4 cos(2?) 
A. 
lemniscate
B. 
rose with four petals
C. 
rose with four petals
D. 
lemniscate
Answer: D
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Solve using Cramer's Rule.Jerry has 3 pieces of string. The total length is 102 inches. The sum of the two longer pieces is 83. The middle piece is twice as long as the shortest piece. What are the lengths of the 3 pieces?
A. 19, 45, and 55 inches B. 9.5, 19, and 73.5 inches C. 19, 38, and 45 inches D. No solution
Solve.What number is 31% of 70?
A. 21.7 B. 217 C. 2170 D. 21,700
Write the fractions in lowest terms. Then determine whether the pair of fractions is equivalent or not equivalent.
and 
A. Equivalent B. Not equivalent
Find the unknown number in the proportion. Round answer to the nearest hundredth when necessary.
= 
A. x = 242.56 B. x = 14.35 C. x = 5.64 D. x = 0.07