Simplify the expression (-1)(-a)(-bc)

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

What unit of been sure would be appropriate for the volume of a sphere with a radius of 2 meters

What is the measure of ba (the minor arc) in the diagram below?