Use order of operations to simplify the expression.22 + (-20 - 22)
A. 20
B. 64
C. 24
D. -20
Answer: D
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Solve the problem.A certain noise measures 79 decibels. If the intensity is multiplied by 10, how many decibels will the new noise measure? 
A. 89 decibels B. 80 decibels C. 790 decibels D. 79 decibels
Translate the English expression into an algebraic expression. Use x to represent the unknown number.The difference of 8 and the product of 6 and a number
A. 6(x - 8) B. 8 - 6x C. (8 - x)6 D. 6x - 8
Set up, but do not evaluate, an integral for the length of the curve. 2.
A total of $32,000 is invested in two municipal bonds that pay 5.75% and 6.25% simple interest. The investor wants an annual interest income of $1,900 from the investments. What amount should be invested in the 5.75% bond? ?
A. $31,800 B. $20,000 C. $32,000 D. $20,300 E. $20,100