Algebra I Drill 2, Problem 5. How much did Donna need to pay for texting last month?
|Algebra I||Algebraic techniques|
|CAHSEE Math||Algebra I|
|Coordinates and Graphs||Rates of Change|
Each text over 100 is charged $0.20.
If Donna, who has this plan, wrote 125 texts
last month, how much did she need to pay for texting last month?
And here are the potential answers...
So... what is this question asking?
Well, it's really just a simple formula of a constant plus a scalable rate.
So in this case the cost for a month of 100 texts is 5 bucks...
and its x times point 2 for each additional text over 100.
x is 25 in this problem...
25 times point 2 is 5...
so her total bill is 10 bucks.
Our answer is B. As in, "Bill envy."