Can someone me with questions 11 and 12v? ?

11) you substitute the number of hours, h, in the equation they gave you to get the cost, c, she the painter makes

C=15h+245
C= 15(30.25)+245
C= 453.75+245
C= 698.75

12) p=45h
I got this answer because she earns 45 dollars an hour and this determines how much she gets paid depending on how many hours she works.

It is 94.7% that uses the metric system

This is the graph x=1