Add or subtract, if possible. Assume that all variables represent non-negative values. Simplify your answer. -2
+ 5
- 
- 5
A. 21
+ 5
B. -21
+ 5
C. 21
- 5
D. -21
- 5
Answer: D
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Solve the problem.Suppose that z varies jointly with x and y and that z = 196 when x = 7 and 
Find the constant of proportionality k. Then, find z when x = 6 and 
A. k = 2; z = 36
B. k = 19,208; z = 
C. k = 0.2; z = 3.6
D. k = 4; z = 72
Use long division to divide the polynomials.
A. x + 8
B. x + 7 + 
C. x + 7 - 
D. 
Solve the problem. When needed, use 365 days per year and 30 days per month.An initial investment of $1000 is appreciated for 2 years in an account that earns 7% interest, compounded annually. Find the amount of money in the account at the end of the period.
A. $1070.00 B. $144.9 C. $1144.90 D. $1225.04
Simplify the algebraic expression by rewriting the factor with a common base.3x ? 93x + 2
A. 34x + 2 B. 3x + 10 C. 37x + 4 D. 37x + 2