Question

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.
A) 19
B) 33
C) 73
D) 84

Answer 1

@smilekbug @Nnesha @uri @amistre64 @AdmiralAngel25

Answer 2

Use the first formula to find out how many pizzas are needed
p(9) = 9(2) + 1 = 19

Use this formula to find out how much money is needed
r(19) = 4(19) - 3 = 73

Answer is C

Answer 3

Thank you! Can you help me with this one to? @AdmiralAngel25
Given f(x) = the quantity of 3x minus 1, divided by 2, solve for f-1(4).

1

3

5

7

Answer 4

@amistre64 @Compassionate

Answer 5

One second this is tricker for me

Answer 6

Something tells me its either C or D, probably C though...sorry but can't figure it out.

Answer 7

its okay, thanks anyways, sorry i have one more if thats okay

Answer 8

Given that f(x) = 2x + 1 and g(x) = the quantity of 3x minus 1, divided by 2, solve for g(f(3)). @AdmiralAngel25

5

7

9

10

Answer 9

f(3) = 2(3)+1

6+1

7

g(7) = \[\frac{ 3(7)-1}{ 2 }\]

g(x) = 10

Answer 10

ohhh ok, i understand now, thanks again!

Answer 11

np :)

Answer 12

Do you know hoe to find average rate of change for a function?
@AdmiralAngel25