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Don’t even think about starting up your combo lemonade/fro-yo stand without first making sure you understand piecewise functions. You’re just a...
Looking to find function formulas from tables? We've got all you need, right here in this video.
CAHSEE Math 5.5 Algebra and Functions 266 Views
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Description:
Algebra and Functions: Drill Set 5, Problem 5. Solve the equation.
Transcript
- 00:03
And here's your shmoop du jour.
- 00:05
Solve the equation 9x - 18 = 72 for x.
- 00:10
And here are the potential answers...
- 00:12
Before we spoil the ending, hit pause and try to solve it yourself.
- 00:16
This is a straightforward algebra problem that we can solve in two steps.
Full Transcript
- 00:20
Get x on one side by adding 18 to both sides...
- 00:23
...and we get 9x = 90. Next, get x all by itself...
- 00:28
...by dividing both sides by 9.
- 00:31
90 divided by 9 is 10 and voila...
- 00:33
...the answer is D.
- 00:35
That didn't take long.
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