Answer:
Either :
1/2 10x+1/2 20y+1/2 10z
or
5x+10y+5z
Step-by-step explanation:
You're just multiplying everything by 1/2
Answer:
2.6
Step-by-step explanation:
multiply 1.75 by 1.6
Since Sam can paint 5 rooms in 10 hours, since:

then Sam would have to paint at least 3 rooms to make $150.
The range of hours would be from 6 to 10 hours, since 3 rooms takes 6 hours to paint.
The GCF is 2
If you factor it out you get 2(18x-1)
Answer:
Sketch the following three graphs:
1) y = (x - 5)²
2) y = -(x - 5)²
3) y = x - 5
First two are parabolas with vertex at (5,0)
Third one is a line which intersects both the parabolas as (5,0)