Question

Reyna wants to mail a birthday package to her cousin. The post office told her it would take $5.70 in postage to send the package. Reyna has 3 75-cent stamps and 20 45-cent stamps. Which of the following systems of inequalities correctly represents the constraints on the variables in this problem? Let x represent the 75-cent stamps and y represent the 45-cent stamps.

Answer 1

x = # 0.75 stamps y = # 0.45 stamps total postage = $5.70 

Answer 2

The inequality representing the situation is
`0.75x+0.45y\geq 5.70`

Explanation:

Let x represent the 75-cent stamps.

Let y represent the 45-cent stamps.

The inequality representing the number of stamps Reyna can use to mail the package is
`0.75x+0.45y\geq 5.70`