Answer this question pls!! (Will give Brainliest)

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

Ineeeeed this is due tomorrow and i dont know the answer can you find all the exponents

Ade and abc are similar. which best explains why the slope of the line between points a and d is the same as the slope between points a and b?