This question is given you the information of the two units mileage in terms of miles per gallon and fuel consumption. G is gallons. Therefore meaning, total distance is equal (=) to mileage times (X) fuel consumption.
The answer is: A) m = f(g) = 30 × g
68 minus 19 is 49
So the answer is there are 49 more children in the school then on the playground.
4x+2=-2
4x=-2-2
4x=-4
x=-4/4
x=-1
