Question

hi I need help with this question 13, please help with the full workings

Answer 1

A- She made $112.9 total because A= 80+0.14x / x is 235 because thats the amount of customers 
B- Take 80 from 122 is 42 - so 42÷ 0.14 is 300 customers.
C- A = 60 + .22x
D- She'd have to serve 250 customers. 
let me know if I'm wrong