2000003109

SubArea: 
Linear functions
Level: 
C
Project ID: 
2000003109
Accepted: 
0
Clonable: 
0
Easy: 
1
In the morning at 7a.m. we measured 3∘C, at 10a.m. we measured 12∘C. How many degrees was at 9a.m., if we assume that the temperature rose linearly?
9∘C
10∘C
8∘C
6∘C