Ask your own question, for FREE!
Mathematics 22 Online
OpenStudy (anonymous):

If f(x) = x2 + 3, find f(5).

OpenStudy (anonymous):

I think it's 28 but idk.

OpenStudy (only4u):

u r ri8 .. its 28

OpenStudy (anonymous):

It's 13. Just substitute 5 in X.

OpenStudy (anonymous):

Ah thanks that was my first guess but I changed it lol

OpenStudy (the_fizicx99):

f(5) = (5)^2 + 3 25 + 3 It's x2 or x^2 not 2x

OpenStudy (anonymous):

wait so it IS 28?

OpenStudy (the_fizicx99):

I think so, I believe the x is being squared, could you screen shot it so I can see if really is x^2

OpenStudy (anonymous):

no problem give me one sec

OpenStudy (the_fizicx99):

k

OpenStudy (anonymous):

there

OpenStudy (the_fizicx99):

Yup! It's being squared!

OpenStudy (the_fizicx99):

It's 28

OpenStudy (anonymous):

Ohh! Thanks ! I knew it was 28 it would've been 13 if it wasn't squared

OpenStudy (the_fizicx99):

yup

Can't find your answer? Make a FREE account and ask your own questions, OR help others and earn volunteer hours!

Join our real-time social learning platform and learn together with your friends!
Can't find your answer? Make a FREE account and ask your own questions, OR help others and earn volunteer hours!

Join our real-time social learning platform and learn together with your friends!