Question

David has a smart phone data plan that costs $30 per month that includes 6 GB of data, but will charge an extra $10 per GB over the included amount. How much would David have to pay in a month where he used 4 GB over the limit? How much would David have to pay in a month where he used went over by x x GB?

Answer 1

If David uses 4 GB over the limit, then he has used a total of 6 + 4 = 10 GB of data in that month. Since his plan includes 6 GB of data, he has exceeded the limit by 4 GB.

For the extra 4 GB of data, he will be charged an additional $10 per GB, so his total extra charge will be $10 x 4 = $40.

Therefore, in a month where David used 4 GB over the limit, he would have to pay $30 (the base cost of the plan) plus $40 (the extra charge for the additional data), for a total of $70.

If David went over the limit by x GB, then his total data usage for the month would be 6 + x GB. He would then be charged $10 for each GB over the limit, so his extra charge would be $10 x x.

Therefore, in a month where David went over the limit by x GB, he would have to pay $30 (the base cost of the plan) plus $10x (the extra charge for the additional data), for a total of $30 + $10x.

Answer 2

If David used 4 GB over the included 6 GB limit in a given month, he would have used a total of 6 + 4 = 10 GB of data. Since he is charged an extra $10 per GB over the included 6 GB, he would need to pay for the 4 extra GB of data he used, which would be 4 x $10 = $40. Therefore, his total cost for that month would be $30 (base cost) + $40 (extra data cost) = $70.

If David went over the limit by x GB in a given month, he would have used a total of 6 + x GB of data. Since he is charged an extra $10 per GB over the included 6 GB, he would need to pay for the x extra GB of data he used, which would be x x $10 = $10x. Therefore, his total cost for that month would be $30 (base cost) + $10x (extra data cost) = $30 + $10x.