Which systems of equations have no solutions? (Check all that apply.) A. x – y = 1, –3x + 3y = 3

B. 2y = 3 – 4x, x + y = 0

C. 12x + 2 = 4y – 10, 2x + y = –11

D. –3x – y = 5, 15x = 10 – 5y

E. x + y = 1, –4x + 2y = 7

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