I need to know what the answer is?
is it x, y,z, or w?

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

Find the area of the regular hexagon if a side is 20 cm.

3x + 4y = 5 x- 3y = -7 solve by substitution