Question

AP Environmental Science (APES FRQ), if mobile device sales increased from 1998 to 2007, how would you calculate the percent increase?

Answer 1

To calculate the percent increase in mobile device sales from 1998 to 2007, subtract the sales in 1998 from the sales in 2007, divide that difference by the sales in 1998, and multiply by 100.

Step-by-step explanation:

To calculate the percent increase in mobile device sales from 1998 to 2007, you need to find the difference between the sales in 2007 and 1998, then divide that difference by the sales in 1998 and multiply by 100. Here is the formula:

Percent Increase = ((Sales in 2007 - Sales in 1998) / Sales in 1998) * 100

For example, if the sales in 1998 were 100 and the sales in 2007 were 200, the calculation would be: ((200 - 100) / 100) * 100 = 100 percent increase.