Answer:
12x-6
Step-by-step explanation:
perimeter= 2l+2w
=2(x+4)+2(5x-7)
=2x+8+10x-14
=12x-6
Because if you did not you would not have a exact answer.
Answer:

Step-by-step explanation:
we know that
The perimeter of rectangle is equal to

In this problem we have


substitute in the formula and solve for L

simplify


x = -2
function value at x = -2 is intersection of the x value and graph
which is, 3
Hope it is clear:)
B
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