Which of these strategies would eliminate a variable in the system of equations? Pro
5x + 3y = 9
Pro
42 - 3y = 9
Tea
Choose all answers that apply:
Subtract the bottom equation from the top equation.
Add the equations.
Subtract the top equation from the bottom equation.

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