What does the consumer price index measure? ΟΑ.
the change in prices of all goods and services over time
ОВ.
the change in prices of specific goods and services over time
Ос.
the change in prices of final goods and services over time

Α. the change in prices of all goods and services over time

Step-by-step explanation:

sorry if I'm wrong

We will assume that the road from house to class leads to the east. Than you go to the southwest. We will try to find the angle between the lines that lead from the house to class and from lunch back home. 
By the cosine law: 
800² = 749² + 305² - 2 · 749 · 305 · cos α
640 000 = 561 001 + 93 025 - 456 890 cos α
cos α = 0.03
α = cos (-1 ) ( 0.03 ) = 88.28°
So it is a little less than 90° .
Direction back home is North northwest ( NNW ).