Fill in the table (image provided)

Answer & Explanation:

So the alien is 90 cm at birth. Your just going to add 23 for each year to the birth number of 90, because a year = 23 cm of growth

At 2 years it will be
90 + 23 + 23 = 136

At 4 years it will be
90 + 23 + 23 + 23 + 23 = 182

At 6 years it will be
23 x 6 = 138, 138 + 90 = 228

At 7 years it will be
23 x 7 = 161, 161 + 90 = 251

I'm gonna have to say about 13 percent