Answer:
Which contract is better relies on how many hairdressing services she makes each month. If she makes less than 50 hairdressing services, contract A is better, but if she makes more than 50 hairdressing services, contract B is better
Explanation:
Let's call:
x: number of hairdressing services made
y: salary received
With contract A:
y = 800
With contract B:
y = 300 + 10x
If contract A and B are equal:
300 + 10x = 800
10x = 800 - 300
x = 500/10
x = 50