Answer:
y=60+25h+0.3r
Step-by-step explanation:
let y be the total charges
given that the hour is h
and the cost for raw material is r
therefore
1. The first hour of service call = $60
2. For each additional hour= 25h
3. 30% over the cost of the materials.= 30/100*r=0.3r
total charges
therefore the expression is
There isn't a plot
the answer is 20 percent
there are 7 verticles on this triangular prism
