CAHSEE Math 2.5 Algebra I

Algebra I Drill 2, Problem 5. How much did Donna need to pay for texting last month?

Algebra IAlgebraic techniques
CAHSEE MathAlgebra I
Coordinates and GraphsRates of Change
LanguageEnglish Language

Transcript

00:27

Each text over 100 is charged $0.20.

00:31

If Donna, who has this plan, wrote 125 texts

00:35

last month, how much did she need to pay for texting last month?

00:39

And here are the potential answers...

00:47

So... what is this question asking?

00:49

Well, it's really just a simple formula of a constant plus a scalable rate.

00:54

So in this case the cost for a month of 100 texts is 5 bucks...

00:59

and its x times point 2 for each additional text over 100.

01:06

x is 25 in this problem...

01:10

25 times point 2 is 5...

01:16

so her total bill is 10 bucks.

01:21

Our answer is B. As in, "Bill envy."