In Baguio City, the average daily temperature in February is 9°C. In May, the average daily temperature is 19°C more. What is the average daily temperature in May?
Determine which of the following function is an injective from the set of integers to the set of integers
A). f(n)=n^2 + 1,
B). f(n)=n^3
C). f(n)=n^3-4
4). f(n)=n/2