If a gallon has 4 quarts, and 1 has quart has 2 pints, how many pints are in 8 gallons

What is x and y (use substitution? ) 5x+3y=38 and y=3x+8?

After the seventh month of a 12-month loan: the numerator is: {(n + 11) + (n + 10) + (n + 9) + (n + 8) + (n + 7) + (n + 6) + (n + 5)} = , and the denominator is: {(n) + (n + 1) + + (n + 11)} = . therefore, the fraction is numerator/denominator (to the nearest tenth) = %

Your food costs are $5,500. your total food sales are $11,000. what percent of your food sales do the food costs represent?