Select the expressions that are equivalent to 2(9r) 2(-3r+12r) r+11 r+18 18r asap !

(least common multiples) the answer that i had in the 1st step was lcm of airline tickets sold=72. idk if that even matters but just in case. ! three co-workers are busy selling airline tickets over the phone. in an 8-hour day, charles can sell 8 airline tickets, ann can sell 9 airline tickets, and michelle can sell 6 airline tickets. step 2 of 2: what is the smallest number of 8-hour days needed for each of them to achieve the same number of sales? it takes charles . it takes . it takes .

Askate shop rents roller skates as shown on the table below. which graph and function models this situation?

Which word in the sentence below is an interrogative pronoun? who is picking us up from school? whousisfrom