Find the volume of the prism.

c. 120 units^3

Step-by-step explanation:

L x W x H = V

3 x 4 / 2 = 6

6 x 20 = 120

d)  y = -2x + 17.

Step-by-step explanation:

Use the point-slope for  of the equation of a line:

y - y1 = m(x - x1)  where m = the slope and (x1, y1) is a point on the line.

So here we have:

y - 5 = -2(x - 6)

y = -2x + 12 + 5

y = -2x + 17.