3 years ago

Please Help! It is Pre-Calc and I need to know the answer!

Mathematics

1 answer:

mezya [45]3 years ago

6 0

The limit of a continuous function at a point is just the value of that function at the point.

a. f(x)=10

f(-1)=10

f(x)=x

f(-1)=-1

Answer: a. 10 b=-1, choice a

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tester [92]

We have

$-6 < 3n+9 < 21$ .

From this we have system of inequality

$-6 < 3n+9 \\3n+9 < 21$

We have to simplify both inequalities

$3n+9 > -6 \Longrightarrow n > -5 \\3n+9 < 21 \Longrightarrow n < 4$

So we can conclude that

$n > -5 \wedge n < 4 \Longrightarrow x\in(-5,4)$

Hope this helps.

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