Louisa's savings change by -$9 each time she goes bowling. in all it changed by -$99 during the summer. how many times did she go bowling in the summer?

She went 11 times.

Step-by-step explanation:

Given,

The change in saving in each time she goes bowling = -$ 9,

If she goes t times,

The change in saving for going t times = t × change in saving in each time

= t × -9

= -9t dollars,

According to the question,

-9t = -99

Hence, she went 11 times to bowling.

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: