we are given
The function models the relationship between the number of pretzels x that a certain vendor sells and the profit the vendor makes
[tex]P(x)=0.9x-100[/tex]
here
P(x) is profit
we have to find P(700)
so, we can plug x=700 into P(x)
we get
[tex]P(700)=0.9*700-100[/tex]
[tex]P(700)=630-100[/tex]
[tex]P(700)=530[/tex]
so,
the profit the vendor makes from selling 700 pretzels is $530.........Answer