Question

Part A: Solve –mk – 90 > 85 for m. Show your work. (4 points)

Part B: Solve 3c – 5f = 55 for f. Show your work. (6 points)

Answer 1

A:MK <-175 if k >0, then m <-175/m, if k=0, no answers, if k <0, then m >-175/m


B: 5f=3c-55, then f = 3c-55/5

Answer 2

A:

-mk - 90 > 85

-mk - 90 + 90 > 85 + 90

-mk > 175

-mk / k > 175 / k

-m > 175/k

-m * -1 < 175/k * -1

m < -175/k

Part B:

3c - 5f = 55

3c - 5f - 3c = 55 - 3c

-5f = 55 - 3c

-5f/5 = (55 - 3c) / 5

-f = 55/5 - 3c/5