Answer and work down below. Let me know if you have any questions
In a right triangle with 45 degree angles the two sides are the same length. The hypotenuse is the length of the sides x sqrt(2)
The length of x = 3 and y = 3
Are the cupcakes 37 dollars each or is it 37 dollars for 20 cupcakes?
if they are $37 each then sally can buy 2 cupcakes
if they are $37 for 20 then sally can buy 40 cupcakes