The function p(x) = 2x +1 determines how many pizzas need to be purchased for an after school meeting, where x is the number of students at the meeting. The club leader uses r(p(x)) to find the amount of money to bring for the pizza purchase. The function r(x) = 4x − 3. Solve for how much money to bring when there are 9 students in the meeting.
Accepted Solution
A:
[tex]p(x) = 2x + 9[/tex] substitute the given number of students in the meeting
[tex]p(x) = 2(9) + 9[/tex] [tex]r(p(x))[/tex] wherever there is an x in the equation of r(x) substitute the p(x) equation [tex]r(x) = 4x - 3[/tex]