What is the midpoint of the segment shown below (-2,3) ( -10,3)

The spring the owner of a sporting good store decreases the price of winter gloves from $10 to $8 each increases the price of swimming goggles from $8 to $10 without doing the math you think the percent decrease in the price of the gloves the same as the percent increase of the goggles explain why or why not

Can any one me with the answers to these questions asap?

How can constraints be used to model a real-world situation?