Question

Six times a number increased by 5

Answer 1

I'm not quite sure what you asking here but if your asking how to answer it in "math terms" than I'll be happy to explain :)

So "times" means multiply and "increase" means add so righting this in math terms would be 
6x + 5 
because it's six times "a number" which you can replace with x!

Let me know if you have any questions :3 

Answer 2

6n + 5

n for variable, any number can be inserted