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Vlad [161]
3 years ago
7

Please help! Pre-calculus is very confusing.​

Mathematics
1 answer:
ZanzabumX [31]3 years ago
4 0

Answer:

-1 < x < 0

Step-by-step 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.

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The formula for the circumference of the circle is,
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<5 + <3 = 180    true

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