Help me solve this question ;-;

What is (28 + 7 + 6 + 3) x 1/2 show your work

The sales totals at macy's food store have increased exponentially over the months. which of these best shows the sales in the first three 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.