Jennifer can clean the house by herself in 3 hours. Her little brother Andy helps her clean and it takes them 2 hours working together. How long would it have taken Andy to clean the house if he had worked alone?
a. hours
b. 3 hours
c. 6 hours
d. 1 hour

Tom had a total of $220 and he spent $35 on a basketball ticket . what percent of his money did he have left?

1- 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. 2- what do you think the product of a nonzero rational number and an irrational number is? is it rational or irrational? make use of variables, the closure property of integers, and possibly a proof by contradiction to prove your hypothesis. 3- why do we have to specify that the rational number must be nonzero when we determine what the product of a nonzero rational number and an irrational number is? if the rational number were 0, would it give us the same result we found in part b?

Nikita wants to apply for student aid to fund her college education. arrange the steps involved in nikita’s application for financial aid