A school paid $31.25 for each calculator. If the school bought x calculators, how much did they pay?

On a architect's drawing of a house, 1 inche representa 1.5

Abby is preparing fruit punch for her party. she starts with a bowl filled with liquid that has 1/2 fruit juice and 1/2 sprite, but she decides it's too fruity. so she pours out 1/4 of the liquid, and then fills the bowl up again with sprite. what fraction of the punch is now sprite?

Which of the following is correct interpretation of the expression -4+13