The linear equation y=7x represents the cost y in dollars of x pounds of steak. which ordered pair lies on the graph of the equation?
a ; 2,14
b ; 7,14
c ; 7,7
d ; 4,14

What’s the domain of this function? fastttt

Pls brainliest will be awarded if answer is correct

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