Courtlynn combines 7/8 cup sour cream with 1/2 cream cheese she then divides the mixture between 2 bowls how much mixture does courtlynn put in each bowl

Need on this one asap im almost done with this subject

Anormally distributed data set has a mean of 176.3 and a standard deviation of 4.2. what is the approximate z-score for the data value of 167.9? 2.00 −2.00 8.4 −8.4

How do i put 3(x+7) in distributive property