You can drive your car 21.7 miles with one gallon of gasoline at the rate how many miles can you drive with 13.2 gallons of gasoline

Yuri, sam and dani had the same math homework last night, but none of them finished it. yuri finished 3/8 of her homework, sam finished 4/6 of her homework and dani finished 1/2. who finished the most math homework? who finished the least amount?

Do u just plot the numbers on the graph like (1,

3x + 4y = 5 x- 3y = -7 solve by substitution