Need help with 12-14 plz

Describe how fraction strips can you order fractions

Find the average rate of change for f(x) = x2 − 3x − 10 from x = −5 to x = 10.

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