Respuesta :

1.
-3x-4>8
-3x>12
x<-4

2.
-y+4y+3(y-5)
3y+3y-15
6y-15

3.
3*45=135
135*1.08625=146.64375
round
$146.64

4. multily exponents
(-4x^6y)^3=(-4)^3(x^6)^3(y)^3=-64x^18y^3


5. 4+2+4=10
2/10time1/9=1/45