Mr. Garcia is replacing the insulation in his attic and garage. Each roll of insulation is 1.25 feet wide and 50 feet long. The picture shows the dimensions of the attic and the garage that he needs to cover.
100 ft
attic
25 ft
garage
28 ft
25 ft
What is the minimum number of rolls of insulation that Mr. Garcia should buy in order to cover both the garage and the attic completely?
A. 12
OB. 40
O c. 52
O D. 55

B. 40

Hope this helps

5x + 3y = - 4

step-by-step explanation:

the equation of a line in standard form is

ax + by = c ( a is a positive integer and b, c are integers )

express the line first of all in slope- intercept form

y = mx + c ( m is the slope and c the y-intercept )

to calculate m use the gradient formula

m = ( y₂ - y₁ ) / ( x₂ - x₁ )

with (x₁, y₁ ) = (7, - 3) and (x₂, y₂ ) = (4, - 8)

m = = -

y = - x + c ← is the partial equation

to find c substitute either of the 2 points into the partial equation

using (4, - 8 ), then

- 8 = - + c ⇒ c = -

y = - x - ← in slope-intercept form

multiply all terms by 3 to eliminate the fractions

3y = - 5x - 4 ( add 5x to both sides )

5x + 3y = - 4 ← in standard form