Is 1/4 the answer to this what ratio forms a porportion with 8/36

Factor x2 – 8x + 15. which pair of numbers has a product of ac and a sum of what is the factored form of the

Suzanne began a trip with 18 1/2 gallons of gas in the gas tank of her car if she hughes 17 3/4 gallons on the trip how many gallons does she have left once she finish the trip

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.