Which equation represents this number sentence? The quotient of 7 and a number is 10 less than 3 times the number.

7n=3(n−10)

7n=3n−10

n7=10−3n

7n=10−3n

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