At a recent party, it cost $9.50 for refreshments for 10 guests. at this rate, how much would it cost to have refreshments for 80 guests?

Acylinder and its dimensions are shown. which equation can be used to find v, the volume of the cylinder in cubic centimeters?

Offering 30 if a plus b plus c equals 68 and ab plus bc plus ca equals 1121, where a, b, and c are all prime numbers, find the value of abc. the answer is 1978 but i need an explanation on how to get that.

Hi i’m not sure how to do question 20 if u could explain how to do it that’d b great