Ten times the square of a non-zero number is equal to seventy times the number

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

John used linear combination to solve the system of equations shown. he did so by multiplying the first equation by -3 and the second equation by another number to eliminate the x-terms. what number did jonas multiply the second equation by? 4x-6y=23x+5y=11

Given ab and cb are tangents of p, and m =10°. what is the measure of abp?