Mean is just another name for average. To find the mean of a data set, add all the values together and divide by the number of values in the set. The result is your mean!
Answer from: Quest
the 3rd option is right
step-by-step explanation:
Answer from: Quest
for this case we must apply distributive property to the following expression:
the distributive property states that:
then, when applying the property we have to multiply the -2 for each term within the parenthesis: