Answer:
Hailey's total pay on a day which she sells x dollars worth of computer is 
Step-by-step explanation:
<em>Given,</em>
Let x represents the total amount of sales per day
Let bp represents her base pay
bp = $100
Let sc represents her sales commission
sc = 2.5% of total amount of sales
sc = 2.5% of x
Let P(x) represent her total pay on a day she sells x dollars worth of computer
To calculate P(x), we make use of the summation of her base pay by her total sales commission.
This is given as
P(x) = base pay + sales commission
or
P(x) = bp + sc
By Substitution of the right values
P(x) = $100 + 2.5% of $x
of $x



Hence, Hailey's total pay on a day which she sells x dollars worth of computer is 