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CAHSEE Math 2.4 Mathematical Reasoning
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Mathematical Reasoning Drill 2 Problem 4. Which of the following expressions tells how much he spends on rent per month?

CAHSEE Math 5.4 Algebra I
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Math Algebra I: Drill 5, Problem 4. The following graph represents the solution set to which of the following systems of inequalities in two variab...

CAHSEE Math 6.3 Algebra I
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CAHSEE Math: Algebra I Drill 6, Problem 3. If x ounces of a 10% salt solution are added with 20 ounces of a 50% salt solution to create a comb...

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CAHSEE Math 6.4 Statistics, Data, and Probability II 215 Views


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Description:

Statistics, Data, and Probability II Drill 6 Problem 4. What conclusion can be drawn from the graph?

Language:
English Language

Transcript

00:04

Here’s your shmoop du jour…

00:06

Mark kept track of the time he spent online each month for the past year.

00:10

The truth can be scary. This guy likes his Minecraft.

00:14

The graph below shows the time Mark spent online in hours and the cost of the internet access.

00:19

What conclusion can be drawn from the graph?

00:23

And here are the potential answers...

00:26

OK, so this question is a scatter plot that… isn’t very scattered.

00:29

It basically looks like the heart monitor of a guy whose heart isn’t… doing so hot.

00:34

Let’s just read through the potential answers and, hopefully, one should jump out at us.

00:38

A “He spends approximately the same amount of time online each month.”

00:43

Well – no – he’s all over the map from here to here… like 2 hours to about 65.

00:48

So A is false.

00:49

B “He is charged according to the time spent online.”

00:54

No – the dollar amounts basically never change – he clearly has the “all you can eat" plan.

01:01

C “He is charged the same no matter how much time he spends online.” Correctamundo.

01:08

D “He is charged according to how much he downloads.”

01:11

Fortunately for Mark… no he’s not.

01:13

Or else he’d have to field some pretty tough questions from his mother… and the family therapist.

01:22

So the answer is C.

01:23

We also would have accepted that the answer is… “Mark really needs to get a life.”

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