Can anyone help, for my sister math assignment

Tom had a total of $220 and he spent $35 on a basketball ticket . what percent of his money did he have left?

Give the equations of two different lines that are perpendicular to the line 3x + 4y = 7.

Acompany charges $0.10 for each letter engraved. bobby plans to spend no more than $5.00 on the engraving on a jewelry box. write and solve an inequality to find the maximum number of letters he can have engraved.