Can someone please help me? A stack of 33 CDs is 1.5 inches high. How many CDs would be in a stack that is 3.5 inches high? Write a proportion to represent his situation.

77 CD’s

Step by step:
Since we are writing a proportion it will look like this
33/1.5 = x/3.5 ( 33 over 1.5 and x over 3.5)

Now that we have our proportion , you cross multiply
33 x 3.5 = 115.5
“X” x 1.5 = 1.5x
So now you will have an equation that looks like this 1.5x=115.5
Once you have that then you divide 1.5 from each side , then after that then you should have x=77
So it takes 77 CD’s to be in a 3.5 inch high stack .
Hoped this helped , if it didn’t I apologize
Good luck

The answer is 1 because you have to flip the sign when dividing by negative number and 3