Evaluate by performing the given operations.-21 + 6 - 43 - (-5) + 2
A. -51
B. 25
C. -61
D. 9
Answer: A
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Find the largest of three consecutive whole numbers such that twice the sum of the two smallest numbers is 6 more than three times the largest number.
A. 14 B. 10 C. 11 D. 13 E. 12
Determine what m and b represent.The cost, in dollars, of retaining the services of a computer repairman in Anchorville is given by 
where x is the number of hours worked.
A. 18 signifies the hourly rate, and 51 signifies the overhead charge. B. -51 signifies the hourly rate, and 18 signifies the travel cost. C. 69 signifies the cost for an on-site inspection. D. 51 signifies the hourly rate, and 18 signifies the overhead charge.
Use the distributive property to rewrite the expression.49(39 + 44)
A. 49 ? 39 + 49 ? 44 B. 49 + 39 + 44 C. 49 ? 39 + 44 D. 49 ? 83
Use mathematical induction to prove the following.1 ? 2 + 2 ? 3 + 3 ? 4 + . . . + n(n + 1) = 
What will be an ideal response?