What expressions is equivalent to -19.2 - (-3.8)

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 is the measure of angle x? answer

What is the factor form of x^2-9x+14