ShmoopTube

Where Monty Python meets your 10th grade teacher.

Search Thousands of Shmoop Videos


ACT Aspire Math Videos 91 videos

ACT Aspire Math: Solving for x when It's in the Denominator
25 Views

Given the following equation, what is x?)

ACT Aspire Math: Comparing Cost per Pound of Hello Kitty Candy
0 Views

At the local candy store down the street, three pounds of Hello Kitty gummy treats cost $6.42. At the candy store across town, five pounds of Hello...

ACT Aspire Math: How Many Hundredths Are There in Four Tenths?
6 Views

How many hundredths are there in four tenths?

See All

ACT Aspire Math: Funception, a.k.a. Functions within Functions 4 Views


Share It!


Description:

If f(x) = x + 9 and g(y) = -3y, what is f(g(-2))?


Transcript

00:02

Okay Mass members more drilling for you Here we go

00:04

If f of axes x plus nine and g of

00:07

y is negative Three Why What is f of jesus

00:10

A bh knew to there Yeah Who a function within

00:18

a function It's like that inception of math but with

00:22

less violence right With composite functions like this we have

00:25

to start with the innermost function Well the function notation

00:29

g of negative to tells us to input the value

00:31

Negative too for why in the equation given for g

00:34

of why so g of negative too is negative Three

00:37

time thinking of two which is just six So since

00:39

g of negative two is six we're gonna replace the

00:42

innermost function with that value So stick a six right

00:45

in there The problems should no longer read half of

00:48

jesus Avner You're too but rather looking more presentable as

00:51

f of six So next we find the value of

00:54

f of six which is well Mm six is six

00:57

plus nine which is fifteen No weird dreams of inception

01:02

necessary of the answers Just d

Related Videos

ACT Aspire Reading: Summarizing Events
64 Views

Which of the following sentences provides the best description of the events in the passage?

ACT Aspire Reading: Recognizing Explicit Details
25 Views

Lucy runs to the edge of Kensington Gardens because...

ACT Aspire Reading: Understanding Sequence of Events
17 Views

Immediately before Lucy lays her hand on her father's knee, she was...

ACT Aspire Reading: Identifying a Character's Emotions
12 Views

In contrast to Lucy's reaction to the lady, Mr. Rayburn's reaction is characterized by:

ACT Aspire Reading: What's Black and White and Read All Over?
3 Views

Mr. Rayburn is most likely reading the newspaper in order to: