The answer is 20. Hope it helps.
He payed $43 to get the car so you need to do $111.20 -$43 = $68.20 then he pays $1.10 for every mile he drives so you need to decide $68.20 by$1.10 to get 62 so he drives 62 miles
48x² + 8 = 8(6x² + 1) [we factor out 8, because 48 and 8 are divisible by 8]