Use the substitution method to solve the system of equations. choose the
correct ordered pair.
у= 8х - 4
х= 4
a. (2, 4)
в. (2, 12)
с. (4, 28)
d. (4, 4)

C. (4,28)

Step-by-step explanation:

When y = 8x - 4 ; x = 4

when u substitute x in the equation

the value of y = 28

y = (8 x 4) - 4

= 32 - 4

= 28.

As coordinates it would be (x,y) = ( 4,28 )

126.66 m²

step-by-step explanation:

the pertinent area formula is a = πr², where r is the radius.

here, a = π(6.35 m)² = 40.32π, or approximately 126.66 m²