Use the table to write a liner function that relates to y to x X: -2, 0, 2, 4
1 answer:
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Let's start with what we know:
And we are trying to put it into this form:
Here is what it would look like:
You can check you work by using the FOIL method (first, outer, inner, last)
And we are trying to put it into this form:
Here is what it would look like:
You can check you work by using the FOIL method (first, outer, inner, last)
Let the number of text messages be represented by X.
Then the total cost of David's cell phone adds up to
Since the total cost of David's phone equals $91.40, we get the following equation.
Subtract 50 on both sides
Divide both sides by 0.45
Therefore David has send 92 text messages.
Then the total cost of David's cell phone adds up to
Since the total cost of David's phone equals $91.40, we get the following equation.
Subtract 50 on both sides
Divide both sides by 0.45
Therefore David has send 92 text messages.