Are these functions or not functions

is a function. Number four is a function.

Step-by-step explanation:

A function is basically if there are two of the same numbers in the x part, then it is not a function but if all the numbers are different. Then it is a function

4444444444444 i think

logv3(x+2)=1

rewrite in exponential form:

logb(x) = y is equal to b^y =x

b = 3, y = 1

now solve for x:

3^1 = x+2)

x = 3-2

x = 1

see the picture for the graph.