Multiply and simplify.18 
A. 
B. -162
C. -2
D. 2
Answer: C
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Solve using the addition principle and/or the multiplication principle.
+ x = 5
A. 
B. 
C. 
D. 24
What lump sum should be deposited in an account that will earn at an annual rate of 9%, compounded quarterly, to grow to $150,000 for retirement in 20 years? Round your answer to the nearest cent.
A. $147,330.10 B. $18,292.68 C. $53,571.43 D. $24,961.93 E. $25,294.49
Answer the question.There is a commutative property for both addition and multiplication. Is there a commutative property for subtraction? If so, state the property.
A. Yes. x - y = y - x B. No.
Solve the system of equations using Cramer's Rule if it is applicable. If Cramer's Rule is not applicable, say so.
A. x = 9, y = 5, z = 9; (9, 5, 9) B. x = 7, y = 7, z = 5; (7, 7, 5) C. x = 6, y = -9, z = -5; (6, -9, -5) D. x = 6, y = 9, z = 5; (6, 9, 5)