Which ratio is equivalent to the ratio 20 to 35? 5 to 7 7 to 5 8 to 14 14 to 8

Aclassmate thinks that solving a system by graphing gives an exact answer when the lines appear to cross at a grid point, but only an approximate answer when they don't. explain why this isn't true.

Ineed here’s a picture of the question

Lucy spent $165 in december using a new credit card. in january, she began paying between $15 and $25 each month towards her account balance.