A laptop computer is purchased for $2100. After each year, the resale value decreases by 30%. What will the resale value be after 3 years?
Use the calculator provided and round your answer to the nearest dollar.

Write an equation for the function that includes the points (2,100)and (3,100)

In a two-digit number the units' digit is 7 more than the tens' digit. the number with digits reversed is three times as large as the sum of the original number and the two digits. find the number.

Can you me with this question? i'll reward *30 points i just need with this one question so that i could solve the others. * edit: i originally set up the question to reward 30 points, but for some reason i can only reward 15. if you don't get 30, then i'm sorry. i'm still kind of new to this site