Cody increased the amount of money he saves each week from $40 to $75. By what percentage did Cody increase the amount of money he saves?

Is the product of two rational numbers irrational or rational? first, make a hypothesis by multiplying two rational numbers. then, use variables such as x=a/b and y=c/d and the closure property of integers to prove your hypothesis.

Factor the polynomial by its greatest common monomial factor.

When steve woke up. his temperature was 102 degrees f. two hours later it was 3 degrees lower. what was his temperature then?