3 goes in to 40 13 times
7 goes in to 40 5 times
but it is not 13+5 because you do not want to count 21 twice
This is a bit harder. I suggest getting the Domain and Range for the function of x.
If any of these answers have, an infinite domain and (3, infinite) range. That will be your answer.
Your answer is B.
f(x) = 2x²+3 has the same domain and range as x²+3
