It’s a 3 digit number, the tens are double the ones, the hundreds are double the tens, the sum of the digits is 14, what number is it?

121

Step-by-step explanation:

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.