The function which represents the annual salary for total sales of x dollars, where x is greater than $250000 is 0.025x+29750.
Given basic salary=3000 p.m. , bonus 2.5% of total sales above $250000.
We have to make a function which shows the annual salary for total sales of x dollars where x is greater than $250000.
Function is a relationship between two or more variables which have each y values corresponding to x values.
According to question
Total basic salary of whole year=3000*12=$36000
We have been given total sales be x.
Sales above $250000 is x-250000
Bonus on sales=2.5%(x-250000)
Function f(x)=36000+2.5%(x-250000)
=36000+0.025x-0.025*250000
=36000+0.025x-6250
=0.025x+29750
Hence the function which shows the annual salary for total sales of x dollars is f(x)=0.025x+29750.
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