camille has 18.90 to spend on groceries. after buying 10 grapefruits she had 3.90 left. if each grapefruit costs the same amount. what is the price of one grapefruit

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.

What is the perimeter of a rectangle if the length is 5 and the width is x?

Asandwich shop has 18 tables. each table seats up to 4 people. to find the greatest number of people that can be seated, you can solve p4 ≤ 18. which step is the best way to solve the inequality? plz asap i repeat plz