Question

2A-1 Electrical Company charges $45 for a service call. After the first hour (h), there is a $25 hourly charge. Materials (m) for the

job are an additional cost. Which equation could be used to find the cost (C) to the customer if the job takes a total of h hours?
C=45+25h+m
C=45+25(h + m)
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C=45+ 25( - 1) +m
C=45 + 25(h - 1)

Answer 1

The answer would be - C=45+25h=m

For the first hour, the electrical company charges $45 dollars. For the hours after, he charges $25 dollars. Since we do not know how many hours he worked, we put $25h in the expression. Then there is materials, which we also do not know what it cost. Therefore, the expression would be C=45+25h=m. Hope this helped :)

Answer 2

C = 45 + 25(h-1) + m

Explanation:

Note: All options are incorrect.

From the given information it is clear that

Fixed cost = $45

Hourly charges after the first hour = $25

Total number of hours = h

Remaining hours after first hour = (h-1)

Materials (m) for the job are an additional cost.

Total cost = Fixed cost + Hourly charges + Additional cost

C = 45 + 25(h-1) + m

Hence, the cost (C) to the customer if the job takes a total of h hours is C = 45 + 25(h-1) + m.