Multiply and, if possible, simplify. Assume that all variables represent nonnegative numbers.
? 
A. 4x5
B. 2
C. 2x10
D. 2x5
Answer: D
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Find the limit, if it exists.
A. 78 B. 13 C. 7 D. Does not exist
Find the expected value.Mr. Cameron is sponsoring an summer concert. He estimates that he will make $300,000 if it does not rain and make $60,000 if it does rain. The weather bureau predicts the chance of rain is 0.34 for the day of the concert. What are Mr. Cameron's expected concert earning?
A. $300,000 B. $360,000 C. $60,000 D. $218,400
Find zw or 
as specified. Leave your answer in polar form.z = 
w = 
Find 
.
A. 
B. 3
C. 3
D. 
Write an equation to represent the situation. Then, solve the equation.Angela's salary started at $38,000 per year with annual raises of $3000. Stanly's salary started at $44,000 with annual raises of $2000. Angela and Stany were hired at the same time. After how many years will both employees earn the same salary?
A. $38,000x + $3000 = $44,000x + $2000; 6 years B. $38,000 + $2000x = $44,000 + $3000x; 6 years C. $38,000 + $3000x = $44,000 + $2000x; 6 years D. $38,000x + $2000 = $44,000x + $3000; 6 years