Your cell phone plan cost $39.99 per month plus $.13 for each text message you send or receive. You have at most $45 to spend on your cell phone bill. What is the maximum number of text messages that you can send or receive next month?

At most 38 text messages.

Step-by-step explanation:

Let x represent number of text message you send or receive.

We have been given that the cell phone plan charges $.13 for each text message you send or receive. So amount charged for sending or receiving x text messages would be .

We are also told that your cell phone plan cost $39.99 per month, so total cost of monthly bill would be .

Since you can spend at most $45, so total cost of x messages should be less than or equal to 45 as:

Therefore, you can send or receive at most 38 text messages.

step-by-step explanation:

use an equation of ratios to determine the amount of gas needed to fill the tank.

    0.2             0.8

  =    

288.75             x

                                                              231 gal

so, 0.2x = (0.8)(288.75 gal), and x = = 1155 gal.

                                                                0.2

it would take 1155 gal. to fill the tank.

the cost would be

1155 gal         $3

* = $3465   (answer)

      1           1 gal

hope this you