Question

Cell phones are becoming very popular at Poplar Middle School. In 2000, there were 15 students with cell phones. Each year the number of students with cell phones has increased by 20%. At this rate, how many students will have cell phones in 2007?

Answer 1

108 how? 15+20% then time it by 6

Answer 2

108 isnt a choice though

Answer 3

ok then idk

Answer 4

thank you for helping though

Answer 5

oh no

Answer 6

to increase a number by 20% multiply it by \(100\%+20\%=120\%=1.2\)

Answer 7

to do it 7 times in a row, multiply it by \((1.2)^7\)

Answer 8

that is, compute
\[15\times (1.2)^7\] which will require a calculator