What is 2.5/10 (fraction) simplified?

Is the square root of 4 plus the square root of 16 rational?

The radius of a sphere is 3 inches. which represents the volume of the sphere?

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