Perform the indicated operations and simplify the result. Leave the answer in factored form.
? 
A. 
B. 
C. 
D. 
Answer: D
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Find the sum of the series.
A. 
B. 
C. 
D. 
Solve the problem.Mark Jakob lives in Tulsa, Oklahoma and plans to attend graduate school to earn his Ph.D. in chemistry. He wants to visit chemistry departments at schools in the following cities: Berkeley, California; Madison, Wisconsin, and Chicago, Illinois. The costs of the one-way flights between these four cities are as follows: Tulsa to Berkeley costs $604; Tulsa to Madison costs $510; Tulsa to Chicago costs $490; Berkeley to Madison costs $817; Berkeley to Chicago costs $699; Chicago to Madison costs $95. What is the minimum cost Mark can pay to visit all the schools and return to Tulsa?
A. $2006 B. $2516 C. $1210 D. $1908
Represent the vector in the form v = ai + bj whose magnitude and direction angle are given.
= 8; ? = 0°
A. v = -8j B. v = 8i + 8j C. v = 8j D. v = 8i
Solve.Joel has started a business mowing lawns for the summer. The bar graph below tracks his net income for five weeks. 
Find the difference in Joel's net income between week 3 and week 4.
A. $137 B. $71 C. $127 D. $81