State the practical meaning of the slope and y-intercept for the situation described.The cost, in dollars, of retaining the services of a computer repairman in Anchorville is given by C = 48x + 18, where x is the number of hours worked.
Answer
A
48 signifies the hourly rate, and 18 signifies the overhead charge.
B
-48 signifies the hourly rate, and 18 signifies the travel cost.
C
18 signifies the hourly rate, and 48 signifies the overhead charge.
D
66 signifies the cost for an on-site inspection.
Explanation
In C = 48x + 18, the slope 48 is the increase in cost for each additional hour worked, so it is the hourly rate of $48. The y-intercept 18 is the cost when no hours have been worked, representing the $18 overhead charge. Therefore, choice A is correct.
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