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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...
Domain and range: two terms you will learn to love (or hate with a vengeance). The domain is the set of all possible x values, and range is the set...
Functions briefly flirted with the idea of being infomercial hosts, but they didn’t shine when talking on-camera. They’re much better off in th...
CAHSEE Math 5.3 Algebra and Functions 2033 Views
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Description:
CAHSEE Math: Algebra and Functions Drill 5, Problem 3. Solve the equation.
Transcript
- 00:03
Here's your shmoop du jour, brought to you by Two-Step Equations.
- 00:07
Or, for any dogs taking this test...Four-Step Equations.
- 00:12
Solve the equation -10x + 23 = 353 for x.
- 00:18
And here are your potential options...
- 00:21
Okay, so we've got a classic Two-Step equation here.
Full Transcript
- 00:24
Hopefully we don't have... two left hands.
- 00:28
To solve, we need to get x all by itself.
- 00:31
And when we say "by itself," we mean no numbers, no negative symbols... no nothing.
- 00:36
With that in mind, we first subtract 23 from both sides:
- 00:39
And we get -10x = 330.
- 00:41
Next, divide 330 by -10 to leave x alone.
- 00:45
x = -33.
- 00:46
And... that's it. Our answer is B.
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