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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?
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...
Full Transcript
- 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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