Subtract. susan began a trip with 18 1/2 gallons of gas in the gas tank of her car. if she used 17 3/4 gallons on the trip, how many gallons did she have left when she finished the trip?
a 1 1/4 gallons
b 1 3/4 gallons
c 1/2 gallons
d 3/4 gallons

Can some one me with these questions

Which function has the domain x> -11?

10 points? ? +++ me asap gabriella uses the current exchange rate to write the function, h(x), where x is the number of u.s. dollars and h(x) is the number of euros, the european union currency. she checks the rate and finds that h(100) = 7.5. which statement best describes what h(100) = 75 signifies? a) gabriella averages 7.5 u.s. dollars for every 100 euros. b) gabriella averages 100 u.s. dollars for every 25 euros. c) gabriella can exchange 75 u.s. dollars for 100 euros. d) gabriella can exchange 100 u.s. dollars for 75 euros.