+37157 1. at year
0=100
8=731
9 = 803
10=858
11=901
15 =978
20=996
So 'a' is correct and 'b' is correct and d is correct bu c is not
2. this function has values for all x as long as x-3 is not NEGATIVE
so domain = 3 to infinity (includes 3)
the corresponding range for these values of x goes from 0 to infinity
so the second choice is good
