Aculture started with 3000 bacteria after 8 hours it grew to 3300 how much will there be in 12 hours estimate to the nearest whole number

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

Solve the following inequalities and show the solution on a number line. 2x+3< 3(4x+5)

When solving this problem: 3025/5.5 = a/90.75 you get 49912.5 which would be the length of one of the sides of a square when the area is only 90.75 inches. is that answer correct, why, and how is it possible?