For the given polar equation, write an equivalent rectangular equation.r = 1 + 2 sin ?
A. 
= x2 + y2 + 2y
B. x2 + y2 = 
+ 2x
C. x2 + y2 = 
+ 2y
D. 
= x2 + y2 + 2x
Answer: C
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Use the given vectors u, v, w, and z to draw the indicated vector. 
u + z
A. 
B. 
C. 
D. 
Describe the distributions with a pie chart.The following figures give the economic distribution for 14,000 people who live in a certain county.PoorMiddle IncomeRich4200?8400?1400
A. 
B. 
Solve the problem.The future value of a simple interest investment is given by S = P(1 + rt), where P is the principal invested at a simple interest rate r for t years. What principal P must be invested for 
at the simple interest rate 
so that the future value grows to $3600.
A. $3503.65 B. $3472.67 C. $127.33 D. $3243.24
Use the Venn diagram to find the requested set.Find A' ? B'.
A. {7, 3, 4, z, r, h} B. {7} C. {4} D. ?