2people saved half of my life and i am full but the other half is remaining answer the 8th question. the figure is also included for ur needs i am trying to work it out but still not getting it

First find the area of one triangle using Heron's formula:

where:

Thus

Then the total area is:

and the total costs is:

5x+40

5(x + 8)

7x - 49

7(x - 7)

18x + 9

9(2x + 1)

15x - 10

5(3x - 2)

step-by-step explanation:

for number one all you have to do is factor 5 out of 5x + 40

for number 2 factor 7 out of 7x - 49

for number three factor 9 out of 18x + 9

for number four factor 5 out of 15x - 10

is should be y = 5x

step-by-step explanation:

correct me if im wrong