The cost of a cellphone bill (c) when the number of text messages (T) increases. Write the correct equation for this scenario, and solve for the cost when the number of texts is 4.
The table shows for every 5 texts the cost is 2 and every 10 texts the cost is 4.

Question

The cost of a cellphone bill (c) when the number of text messages (T) increases. Write the correct equation for this scenario, and solve for the cost when the number of texts is 4. 
The table shows for every 5 texts the cost is 2 and every 10 texts the cost is 4.

imstuck · Answer

Your data in table form looks like this:|dw:1409853423035:dw|

imstuck · Answer

So the slope is 2/5, a positive one.  Use that slope and one of the points to write an equation.  Fro that equation we will be able to find how much 4 texts will cost.

imstuck · Answer

|dw:1409853627303:dw|

imstuck · Answer

Now sub in 4 texts for x to find y, the cost of those 4 texts.

imstuck · Answer

|dw:1409853751790:dw|

barrelracing · Answer

so what is the answer