Answer:
It is a linear function, because the line has no curve, and the line is constant
Step-by-step explanation:
In a non linear function there would be a curve in the line, in this line there is no curve so therefore it is linear function.
There are 30 days in June. So 30 days represent 100% of the days:
30 = 100% & x = 70%
so 100x= 2100
x= 21 Days
I hope this helps you! =^-^=