SOLUTION: In 2003, the amount of annual cell phone spam messages totaled about ten million. In 2005, the total grew exponentially to 500 million. Write and exponential function of the form y

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Question 1072184: In 2003, the amount of annual cell phone spam messages totaled about ten million. In 2005, the total grew exponentially to 500 million. Write and exponential function of the form y = abx that could be used to model the increase of spam messages y. Write the function in terms of x, the number of years since 2003. If the number of spam messages continues increasing at the same rate, estimate the annual number of spam messages in 2010.
Answer by Boreal(15235) About Me  (Show Source):
You can put this solution on YOUR website!
y=ab^x
500=10b^2, since it was two years; 50=b^2, b=7.07
y(2010)=10b^7
=10*883,883.48
=8,883,834.765 million or 8,883,884,765,000 spam messages in 2010.