Tell whether the ordered pair is a solution of the equation just substitute a given X and Y to see if the equation works right solution if it works and not solution if it does it 2x+y=5;(7,5)

Anyone know? will mark brainliest if you're correct!

Ftara spends $219 a month for her car payment and she makes $3,200 a month, what percent of her monthly income is spent on her car payment?

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.