Sorry if it blury but 3.75 for 3 pounds of granola pls look at photo and help pls

An airplane travels at an unknown elevation before it descends 3 miles to an elevation of 15 miles. find the elevation of the plane before its descen.

Hannah paid $3.20 for 16 ounces of potato chips. hank paid $3.23 for 17 ounces of potato chips. who paid less per ounces?

Rewrite the equation x = 65 - 60p by factoring the side that contains the variable p.