# Precalc Worksheet and word key!

*label*Mathematics

*timer*Asked: Oct 21st, 2018

*account_balance_wallet*$5

### Question Description

This is very simple im going to provide the word key for this worksheet with all the answers and work provided your job is just to type them out on the blank fillable pdf version if there are words in the word key describing something just change it up so it not word for word but for the work shown thats fine All info will be below!

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## Tutor Answer

Attached.

Pre-Calculus-A sample work – Unit 4: Polynomial and rational functions

Remember to show all work to support your answers!

1. Identify the degree and describe the end behavior of the function

𝑓(𝑥) = 4𝑥 7 − 𝑥 5 + 𝑥 3 − 1

Degree: 7

End behavior:

𝑓(𝑥) → +∞ 𝑎𝑠 𝑥 → +∞

𝑓(𝑥) → +∞ 𝑎𝑠 𝑥 → +∞

2. Use the intermediate value theorem to show that the polynomial function has a real zero

between the numbers given.

𝑥 4 − 4𝑥 3 − 𝑥 + 3; 0.5 𝑎𝑛𝑑 1

𝑓(0.5) = 0.54 − 4(0.53 ) − 0.5 + 3

= 0.0625 ...

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