Can someone Help me with this: Felipe’s solution to an equation is shown below:

Given: x^2+6x+8=0

Step 1: (x+2)(x+4)=0

Step 2: x+2=0 or x+4=0

Step 3: x= -2 or x= -4

Which property of real numbers did Felipe’s use for step 2?

A. Distributive property of multiplication over addition

B: Multiplication property of equality

C. Commutative property of multiplication

D: Zero product of multiplication

Now, martin can reasonably guess that the standard deviation for the entire population of people at the mall during the time of the survey is $1.50. what is the 95% confidence interval about the sample mean? interpret what this means in the context of the situation where 95 people were surveyed and the sample mean is $8. use the information in this resource to construct the confidence interval.