Answer:
18
Step-by-step explanation:
Well.. for the equation x= 3.5, let's take a look at its values

so.. notice.. no matter what "y" is, "x" will always be 3.5,
so is really just a horizontal line, thus, look at the picture below
For 40 hours it would be $350
And since it is only half pay for overtime then she would only make $35 in eight hours
So altogether she would make $385 this week
Volume of a cylinder of radius r and heigth h is

Here h is 15 cm and r is 6 cm.