How many of those 100 customers would likely want the store to stay open late.

Step-by-step explanation:

find the percentage of the people who want the store open longer. of the 40 customers that were surveyed, 12 would want that. 12 divided by 40 is .30, so 30 percent of the customers want it open.

100 more customers are surveyed, so you take 30 percent of 100, which is 30. your answer is "B"

it is a. 4.2 because 7.6-3.4 gets the remaining length of 4.2. i might be wrong but i am pretty sure this is the answer.