Find the product. Write the product in rectangular form, using exact values.[4 cis 45°] [6 cis 225°]
A. 24
B. -24
C. 24i
D. -24i
Answer: D
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The following table shows the U.S. population, in millions, in the given year.
19601970198019902000
179.32203.3226.54248.71281.42?
Use the average rate of change to estimate the U.S. population in 1982.
A. 230.97 million B. 228.76 million C. 237.63 million D. None of the above
Find an equation of the line through the pair of points. Write the equation in the form Ax + By = C.(-7, 0) and (-3, 7)
A. -7x - 10y = -91 B. 7x - 4y = -49 C. 7x + 10y = -91 D. -7x - 4y = -49
Solve the problem.Use the formula A = P(1 + r)2 to find what the rate of interest is if a principal amount of $4000 grows to $4752.40 in 2 years, if interest is compounded annually.
A. 7% B. 10% C. 11% D. 9%
Find 
at the given point. x2 + 3y2 = 13; (1, 2)
A. - 
B. 
C. - 
D. 