Last year the Debate Club had 7 members. This year there are 9 members in the club. Estimate the percent change inthe number of club members. Which is the best estimate for the percent change in the number of club members?

B) 28% increase

Explanation:

There are 2 extra members because 9-7 = 2

Divide this change (2) over the original amount (7) to get the approximate value of 2/7 = 0.2857 which converts over to roughly 28.57%

That rounds to 29%, but that isn't listed. So I'd go with 28% instead. The estimate is close enough.

b

Step-by-step explanation:

option 1

data plot with   3 dots over 33, 1 dot over 34, 2 dots over 35, no dot over 36, 1 dot over 37, 2 dots over 38, 4 dots over 39, and 2 dot over 40.

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: