Question
If f(x) = x2 + 3, find the following.
f(-2) 9
f(3/2)== not sure
f(b) not sure
Thank you
f(-2) 9
f(3/2)== not sure
f(b) not sure
Thank you
Answers
Steve
We already went through f(3/2) and f(b) with f(x) = x^2+2. I answered early this morning, and you said thank you 4 hours ago. Why are you asking for those again? You got f(3/2) correct then. Why are you now not sure?
At any rate, just substitute in the value wherever x appears.
f(-2) = (-2)^2 + 3 = 4+3 = 7
f(3/2) = (3/2)^2 + 3 = 9/4 + 3 = 5.25
f(b) = b^2+3
Not sure how you arrived at 9. It would help if you showed your work, so we can get an idea of where you are getting hung up.
At any rate, just substitute in the value wherever x appears.
f(-2) = (-2)^2 + 3 = 4+3 = 7
f(3/2) = (3/2)^2 + 3 = 9/4 + 3 = 5.25
f(b) = b^2+3
Not sure how you arrived at 9. It would help if you showed your work, so we can get an idea of where you are getting hung up.