Please answer and i have to show work

B

Step-by-step explanation:

Calculate the slope m using the slope formula and equate to

m =

with (x₁, y₁ ) = (3, 2) and (x₂, y₂ ) = (r, - 4)

m = = , then equating gives

= ( cross- multiply )

3(r - 3) = - 12 ( divide both sides by 3 )

r - 3 = - 4 ( add 3 to both sides )

r = - 1 → B

7 ft 6 in means 7 1/2, because 6 in is 1/2 of a foot. 7 ft 8 in means 7 2/3 because 8 in is 2/3 of a foot. 23/3 = 7 2/3. 15/2 = 7 1/2.

23/3   *   15/2   = 57 1/2

step-by-step explanation:

i’m here for points.