Find the value of x (9x-3)

How to choose the sign of the radical in the denominator of the formula for the distance from a point to a line.

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

Iknow its nothing to do with education, but what type of thing should i wrote here? ? : ) its for mcdonald's btw.