Sheldon needs to buy 8 gallons of coleslaw for a family reunion. the table shows the prices for diffrent sizes of two brands of coleslaw. use the table for exersize 11 and 12

Anyone know? will mark brainliest if you're correct!

Sketch the region enclosed by the given curves. decide whether to integrate with respect to x or y. draw a typical approximating rectangle and label its height and width. y= 5x, y=7x^2then find the area s of the region.

Three numbers x, y, and z are in the ratio 2: 7: 8. if 12 is subtracted from y, then three numbers form a geometric sequence (in the order x, y–12, z). find x, y, and z. there are 2 sets.