Fill in missing number to complete the pattern 3.2 4.2 5.2.5.7

Ateacher has $80 to buy workbooks. each work book cost $3. if she buys as many workbooks as possible, how much money does she have leftover? a) $2 b) $4 c) $6 d) $8

What values of x satisfy the inequality x^2-9x< 0? how is your answer shown on the graph?

Julius sold five times as many computers as sam sold last year. in total, they sold 78 computers. how many computers did julius sell?