Chance had 48 cents. his mom gave him 7 dollars. how much money does chance have now?

Interpret the following expression (5y^2-7)^3/(2y)^2

Idon't get undoing if its pass adding and subtracting so can someone ? x-2 over 5 = 18

Robert is placing sod in two square shaped areas of his backyard. one side of the first area is 7.5 feet. one side of the other area is 5.7 feet. the sod costs y dollars per square foot