Answer: £83.70
Step-by-step explanation:
We can set up a ratio.
Let x be the amount he earns for 9 hours of work.

We can cross multiply:
x = 9*9.3
x = £83.70
Wait I don’t really get it but if you mean the result it is -5x^2 + 5 tho
An example of the ratio 4:1 could be, in a school for every 4 girls there is 1 boy. Or something similar:)
-3.0625 is the answer to x