168k views
1 vote
Please help! Pre-calculus is very confusing.​

Please help! Pre-calculus is very confusing.​-example-1
User Fdan
by
7.7k points

1 Answer

3 votes

Answer:

-1 < x < 0

Explanation:

f(x) is a cubic function, so it can have up to 3 real zeros. The first option lists 4 intervals, which is too many.

Check the second option:

f(-1) = -6

f(0) = 7

f(x) changes signs between x=-1 and x=0, so there must be a 0 in that interval.

User Saraph
by
9.0k points

No related questions found

Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

9.4m questions

12.2m answers

Categories