Simplify the expression 8h+(-7.9d)-16+5d-2.4h

8h + (-7.9d) - 16 + 5d - 2.4h
8h - 7.9d - 16 + 5d - 2.4h

lets collect like terms..
8h - 2.4h = 5.6h
5d - 7.9d = - 2.9d
-16even though this has no like terms, dont forget about it

now put it together...
5.6h - 2.9d - 16 <

2.) is the most sense

On monday,mrs.wise bought 3 lbs of apples at $4per lb= 4*3=$12on tuesday ,20%off and she buy 5 lbs of apples = $4-20%=3.20*5lb=$16example: other wise when she buy 5lbs on monday she have to spend 4*5=20