1. Let m be the cost of one mango. Write an expression, in terms of m, to represent the cost of 6 mangoes. 2. Mango costs $1 more than apple. Write an expression, in terms of m, to represent the cost of one apple.

3. Write an expression, in terms of m, to represent the cost of 4 apples.

4. The total cost for 6 mangoes and four apples is $46. Which equation represent the information.

5. What is the cost of one mango?

6. What is the cost of one apple?

ANSWER IF YOU KNOW!

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?