Respuesta :
Answer:
[tex]y=35\cdot{x}[/tex]
Step-by-step explanation:
The two expenses for the phones is $40 and $25 per phone. It is sold for $100. The amount of earnings is the sale price of the phone minus the expense for the phone. Let x be the number of phones they sell and y be the earnings. The expression is:
[tex]y=100x-(40+25)\cdot{x}[/tex]
[tex]y=35\cdot{x}[/tex]