Y=0.40x because the sale which is 40% off would be on x amount of shirts
I don't know if I did this right.
There are 1097.6 pages in the book. I multiplied .35 by 56 and got 19.6. I multiplied 19.6 by 56 and got 1097.6. Therefore, there are 1097.6 pages in the book.

Cross-multiplying and rearranging, we get:

or written without using latex:
k^2 = h^2 - 3mq
Can you finish now?
R + 9
Expression would be r+9=j
J represents the miles that Jessica rode. Since Jessica rode 9 miles farther, you must add 9 to the amount that roger rode.