Let x equal the age, in human years, for a dog that is 2 years old or older. For each of your chosen breeds, write an expression to model its age in dog years. [Hint: Use (x-2) in each expression.]

Question

the dogs are
2yrs: 23 yrs old
3yrs: 27 yrs old
4yrs: 31 yrs old
5yrs: 35 yrs old
75yrs: ?
I'm having trouble writing the expressions,so I can find out what's the expression/answe for 75 years.

Answer 1

Note that the dog years grow by 4 for every increase of 1 human year.

So, using the hint, so that at x=2, (x-2)=0,

y = 4(x-2)+23

Answer 2

3.75