Okay this is super simple, but for some reason i keep getting the wrong answer. Help?
If f(x) = 2x + 3 and g(x) = 4x - 5, what is f(x) ◦ g(x)?

Question

Okay this is super simple, but for some reason i keep getting the wrong answer. Help?
If f(x) = 2x + 3 and g(x) = 4x - 5, what is f(x) ◦ g(x)?

anonymous · Answer

I keep getting 8x+2x-15

anonymous · Answer

Sorry i meant 8x^2

anonymous · Answer

Ok I see what you did! You are supposed plug g(x) into f(x) but remember you need to put parentheses when you put it in! f(x)=2(4x-5)+3
f(x)=8x-10+3
f(x)=8x-7, get it?

anonymous · Answer

Oooooooooh that's right, I forgot that and just foiled, haha ok thanks!

anonymous · Answer

If the dot were filled in it would mean multiplication then you would be right, maybe that's where you got mixed up :P