Algebra 2 and I have no clue what its asking. Please help me!
-
f(x) = x² + 1
f(2) = 2² + 1
f(2) = 5
g(x) = 3x + 1
g(3) = 3*3 + 1
g(3) = 10
f(2) + g(3) = 5 + 10 = 15
f(2) = 2² + 1
f(2) = 5
g(x) = 3x + 1
g(3) = 3*3 + 1
g(3) = 10
f(2) + g(3) = 5 + 10 = 15
-
The f(x) and g(x) denote functions. That means for every value of x that you plug in, there is only one possible output.
f(2) is the output of f(x) if you substitute 2 in for x (so it becomes 2^2+1). Similarly, g(3) is the output of g(x) when you substitute 3 in for x (which is 3*3+1).
So, "f(2) + g(3)" becomes "(2^2+1) + (3*3+1)".
f(2) is the output of f(x) if you substitute 2 in for x (so it becomes 2^2+1). Similarly, g(3) is the output of g(x) when you substitute 3 in for x (which is 3*3+1).
So, "f(2) + g(3)" becomes "(2^2+1) + (3*3+1)".
-
you have to plug the last one into one of the first two, forgot which sorry.