Could you me with numbers 31 and 32?

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

God's gym charges a sign-up fee of $100 plus $30 per month. write an expression to represent how much someone would pay for a membership.

When i'm with my factor 5, my prodect is 20 .when i'm with my addend 6' my sum is 10.what number am i