Y = sit ups, x= days
y= 2x + 15
33 = 2x + 15 (subtract 15 from both sides)
18 = 2x (divide both sides by 2)
9 = x, 9 days
Answer:

Step-by-step explanation:
We begin with the inequality: 
We need to solve for x. This means that we need to subtract 150 from each side and then divide each side by 750. Then we need to simplify.

Answer:
Look in the picture attached
Step-by-step explanation:
x = 2y - 3