Four friends are planning a party at a skating rink the friends must pay 3$ for each person attending the party. they will also spend $36 on snacks. if each friend contributes 21$ to pay for the part, what is the maximum number of people that can attend the party?

Which expression is not a polynomial?

I’m on question 7 it says a covered water tank is in the shape of a cylinder the tank has a 28 inch diameter and a height of 66 inches to the nearest square inch what is the surface area of the water tank

Rick is driving to his uncles house in greenville, which is 120 miles from ricks town .after covering x miles rick she's a sign stating that greensville is 20 miles away. which equation when solved will give the value of x. a: x+120 = 20 b: x x120 =20 c: x +20 equals 120 d: x x20= 120