You put $550 in an account that earns 4.4% simple interest per year how much interest do you earn in six months

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.

If 7x=9y, y/z = 7/5 , then x/z = (a) 2/7 (b) 7/9 (c) 9/5 (d) 9/7 (e) 5/9

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