Kamal write the augmented matrix below to represent a system of equations. which matrix results from the operation -3R2<->R?
1 0 1 =-1
1 3 -1 =-9
3 2 0 =-2

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