Question

We know that the expression is 4x+40. How much will the length of the garden increase by if it uses 50 feet of fencing in total? Here is a photo to help.

Answer 1

240

Explanation:

Answer 2

240

Since the expression is 4x + 40 we just substitute 50 in for x, so the new equation looks like this 4(50) + 40 which gets us 240.