A blueprint of a house shows a
living room that is 15 square
inches. If the blueprint's scale
is 1 inch : 4 feet, what is the
actual square footage of the
living room space?

if you mean

then it's c. 8, -7/3

but if you mean

then it is

answer: a and c are correct

step-by-step explanation:

the +5 is the vertical translation

the added negative symbol in front is the reflection over the y-axis

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

3

step-by-step explanation:

because where the point where the 2 lines intersect is (3,-1) the x value is 3