Slide 1

Cracking the secrets of theCELL PHONE BILL.

NextClick on each number to find Out where each charge came from.Step 4: Prove your billis correct by adding up allcharges.Back39.99 + (-8.00) + (-10.00) + 15.00 + 15.00+ 4.98+ .58 + .05 + .40 + 2.12 Next+ .13 + .07 + .28 + .65 + 2.85 + 1.12= 65.22

Step 2: Check to see if you Went over your allotted Time.

BackNextStep 5: Come up withyour equation.Take the numbers you added together in order to show your actual billed amount. Which numbers are constants?Back39.99 + (-8.00) + (-10.00)+ 4.98+ .58 + .05 + .40 + 2.12 + 15.00 + 15.00+ .13 + .07 + .28 + .65 + 2.85 + 1.12= 65.22Which numbers can change? In Step 3 we realized two different charges that could occur We went over our allotted amount. Our voice charge was.45 cents per minute and our text charge was .10 cents a text and Our data/download charge was .25 cents a download. So we add these into our equation. + .45v + .10t + .25d+ 15.00Combine like terms and Presto you have your equation. 45.24 + .45v + .10t + .25d = Total