If the zeros of the function are not real, can they be x-intercepts?

On a architect's drawing of a house, 1 inche representa 1.5

Consider the proof. given: segment ab is parallel to line de. prove: what is the missing statement in step 5?

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