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CAHSEE Math 1.3 Algebra and Functions 228 Views


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Description:

CAHSEE Math: Algebra and Functions: Drill Set 1, Problem 3. What equation fits the description?

Language:
English Language

Transcript

00:03

And here's your shmoop du jour...

00:07

There's a hot new video game system where kids can actually make money by killing bad guys.

00:15

Not surprisingly, Mike's parents can finally get behind their son's gaming addiction.

00:19

The system costs $230 including sales tax. Each game costs $45, tax included.

00:27

If Mike's parents have agreed to buy him the system, plus n games for his birthday...

00:31

...write an equation that could be used to find the number of games that they can purchase

00:35

if they have $500 to spend.

00:37

Here are the potential answers...

00:39

Before we spoil the ending, hit pause and try it yourself.

00:45

Right off the bat, notice that this problem doesn't need us to figure out the number

00:49

of games Mike's parents can purchase...

00:52

...we just have to come up with the equation that would get us to that information.

00:55

Cool. One less step. Party.

00:58

If n represents the number of games and each game costs $45...

01:03

...then we can represent the total game cost as "45n."

01:09

Because Mike's parents have $500 to spend, the cost of the system... 230... and the cost

01:15

of the games... 45n... must add up to 500. So we can write this as 45n + 230 = 500.

01:25

Bingo. Our answer is B.

01:27

Enough fun and games. Now get back to work.

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