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Question

caishaax3 · Answer

Pedro has created the function f(x) = the quantity of 4x minus 3, divided by 2 to represent the number of assignments he has completed, where x represents the number of weeks in the course. Pedro discovers that, using the inverse function to solve for x = 30, he can predict when he will have 30 assignments completed. Explain to Pedro how to accomplish this, using complete sentences.

anonymous · Answer

f(x) = $$\frac{ 4x-3 }{ 2 }$$
Is that right?

anonymous · Answer

@caishaax3

anonymous · Answer

Ok so I am going to assume that is right because I do not want to wait for you to respond. SO I will just run you through the steps:
1) Make f(x) = y, then switch x and y:
   x = (4y - 3)/2
2) Now solve for y:
  * 2 on both sides
  2x = 4y -3
  +3 on both sides
  2x + 3 = 4y
  /4 on both sides
  y = (2x+3)/4
3) Now plug in 30 to find when he will have completed 30 assignments:
y = (2(30) + 3)/4
y = (60+3)/4
y = 63/4
y = 15.75 Weeks

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