Betty has a checking account and a non-interest bearing savings account. The function C(x), shown below, represents her checking account balance, where x is the number of months. The function S(x), shown below, represents her saving account balance. Which function represents Betty's total account balance, T(x)?

D. T(x) =  - l 240x - 140 l + 450x + 1,500

Explanation:

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the correct answer is 828.07

amount of oatypop that contains the prize = 40%

amount   of oatypop which doesn't contain the prize = (100-40)=60%

probability that hannah will win a prize

    = s +f s +f f s+ff   f s+ff f f s+ infinity.where f= failure,s= success

=   or 60%

probability that hannah only has to buy 3 or less boxes before getting a prize= (s) and ( f s) and (ff s) and (f f f s)

        = = 87.04 %  

step-by-step explanation: