Give the domain and range of the relation.

{(1, 9), (-1, -9), (-7, -5), (6, -9)}
Select one:
A. domain: {-9, -5, 9}; range: {-7, -1, 1, 6}
B. domain: {-7, -1, 1, 6}; range: {-9, -5, 9}
C. domain: {1, 6, 9}; range: {-9, -7, -5, -1}
D. domain: {-9, -7, -5, -1}; range: {1, 6, 9}

Afamily has two cars. the first car has a fuel efficiency of 25 miles per gallon of gas and the second has a fuel efficiency of 15 miles per gallon of gas. during one particular week, the two cars went a combined total of 1025 miles, for a total gas consumption of 55 gallons. how many gallons were consumed by each of the two cars that week?