Sketch the graph of the polar equation.r sin ? = 4
A. 
B. 
C. 
D. 
Answer: B
Mathematics
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Perform the indicated operation(s). Simplify if possible.
+ 
A. 
B. 
C. 
D. 
Mathematics
Solve the system, using Cramer's rule, if possible. 7x + 6y - z = 14 x - 4y + 6z = 34-8x + y + z = -9
A. {(-2, 1, 4)} B. ? C. {(2, 6, 1)} D. {(2, 1, 6)}
Mathematics
Two certificates of deposit (CDs) pay interest at rates that differ by 4%. Money invested for 1 year in the first CD earns $90 interest. The same principal invested in the second CD earns $150. Find the two rates of interest.
A. 6%, 7% B. 5%, 10% C. 6%, 10% D. 4%, 10% E. 6%, 6%
Mathematics
Completely factor the expression. 8t 2 - 32
a. (8t + 16) (t + 2) b. 8(t + 2) (t - 2) c. (8t - 16) (t + 2) d. (8t + 16) (t - 2) e. (8t + 4) (t + 4)
Mathematics