Can someone help me with this circle geometry question ty

The diameter of a circular chip is doubled to use in a new board game. the area of the new chip will be

The table above shows approximate conversions from gallons to liters. what is the value of x?

Sam is a waiter at a local restaurant where he earns wages of $5 per hour sam figures that he also eams about $3 in tips for each person he serves sam works 6 hours on a particular day. if n represents the number of people sam serves that day, which of the following functions could sam use to figure ehis total earings for the do o a. en) = 30 o b. en) = 5n+ 18