Solve the problem.You deposit $48 a week from a savings account for 10 weeks. What is the overall change in the account?
A. $58
B. -$480
C. -$58
D. $480
Answer: D
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Solve the quadratic equation by factoring.x2 - 81 = 80x
A. {-1, 81} B. {1, -81} C. {-9, -9} D. {-9, 9}
Describe the mail-time situation that illustrates the computation, and state the answer.(-61) - 138
A. The mail carrier brings you a check for $61 and takes away a check for $138; 61 - 138 = -77 B. The mail carrier brings you a bill for $61 and takes away a check for $138; -61 - 138 = -199 C. The mail carrier brings you a bill for $61 and brings you a check for $138; -61 + 138 = 77 D. The mail carrier brings you a check for $61 and a check for $138; -199; 61 + 138 = 199
Solve the problem.One conveyor belt can move 1000 boxes in 6 minutes. Another can move 1000 boxes in 8 minutes. If another conveyor belt is added and all three are used, the boxes are moved in 3 minutes. How long would it take the third conveyor belt alone to do the same job?
A. 1
min
B. 24 min
C. 
min
D. 
min
Provide an appropriate response.Which of the four methods of solving quadratic equations work for any quadratic equation?
What will be an ideal response?