Determine the perimeter of quadrilateral CGHI

Can i get some on 18,20,& 22? or one of them

Adepartment store purchases screen-printed t-shirts at a cost of $5 per shirt. they mark up the price 150% (making the selling price 250% of the store's purchase price) and put them on the sales floor. every month that a t-shirt doesn't sell, the store reduces the selling price by 25%.

25 ! the line of best fit is h = 5a + 86. predict the height at age 16.