Answer:
Step-by-step explanation:
the answer is the first one -> shift left 20 units, see the graph in the image
100(7 + 9) =
100(16) =
1600 <=
£110 as 45mins times 4 radiators divided by 60 mins =3 hours
3 hours + 1 hour = 4 hours
4 hours times £20= £80
£80+£30=£110
Now.. notice the picture below, of the two functions
geometry wise, is just a rectangle and a triangle
pretty sure you know how to get those, get their areas, add them up