We must divide the total height by the size of the blocks to work out how many are in the tower
22.5 / 1.5 = 15 blocks
It says that there was an error with my answer, but I don't know what, so I screenshotted what I typed and attached them as 4 images below:
The answer is A
start by isolating the y variable
the rest of the work is shown here
Answer 2. You just have to find wants similar and put it out front and then leave wants left in parentheses