Exrfk

Solution,

radius =7 cm

Area of quarter circle=pi r^2/4

= 3.142*(7)^2/4

=3.142*49/4

=38.4895 cm^2

Solution,

radius=11 cm

Area of semicircle= 1/2 pi r^2

=1/2*pi*(11)^2

= 1/2*3.142*121

=190.091 cm^2

hope it helps

Good luck on your assignment

okay wait before i answer, is this for your points on a graph?

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