Arithmetic Sequence. 32 km
1) Gathering the data fromthe question
1st week = 5km
2nd week: 8km
3rd week: 8km
4th week: 11km
1) Since in this sequence, there's an increase by 3 units, and 3 is the common ratio, being added constantly then this is an Arithmetic Sequence
2)
We can calculate it by using an explicit formula
a_n= a_1 +(n-1)r
a _10 = 5 +(9)3
a_10= 5+27
a_10= 32
So in the 10th week, the patient waked 32 km