All you need to do is add all 7 job hours, and divide the total by 7. Your answer should be 7
so is the question right?
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Therefore, find f(2) and g(2) first before subtracting.

Therefore,

Then find g(2)

Then put f(2) to subtract g(2)

Therefore, the answer is (f-g)(2) = -49.
For this case, the first thing to do is find the area of the trapezoid.
We have then:

Where,
b1: b2: Trapezoid bases
h: height of the trapezoid
Substituting values we have:

Then, the cost per square foot is given by:
Answer:
The new carpet for the room will cost:
C = 1072.5 $