1. 8.5 times - = a
2. -7 + b = -11
3. c - (-3) = 15
4. d times -4 = 32

there is no question content here, but you for the free points! : d

step-by-step explanation:

the triangles are similar. therefore the corresponding sides are in proportion:

              cross multiply

            divide both sides by 32

step-by-step explanation:

for exempl this   system of equations   y = x - 3

                                                                y = 2x - 5

look   the line : y = x -3     ( red)

                            the line : y = 2x -5 ( bleus)