There are six rows 18 chairs in each row in the center of the chairs for four rows of six chairs are brown the rest of the chairs are blue how many chairs are blue

Divide. reduce the answer to lowest terms.5 2/3 ÷ 3 1/9

Me. i can't figure out this question. give an explanation too. .

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