Wednesday

March 4, 2015

March 4, 2015

Posted by **christin** on Sunday, October 20, 2013 at 3:42pm.

if f(x)= 3x+1 and g(x)=x+2

find (f+g)(x) and calculate (f+g)(1)

a little confused can some one please help me thank you

- algebra functions -
**Steve**, Sunday, October 20, 2013 at 5:12pm(f+g) just means to add f and g. Since they're both functions of x, that's why the unfamiliar notation.

(f+g)(x) = f(x)+g(x) = (3x+1)+(x+2) = 4x+3

so, (f+g)(1) = 4(1)+3 = 7

or, you could evaluate f(1)+g(1) = 4+3

**Answer this Question**

**Related Questions**

Algebra - I am very confused about functions. I think if I could see this ...

algebra functions - how do i calculate this if f(x)= 3x+1 and g(x)=x+2 find (fg...

Functions - I have to find the domain and range for the composite of functions G...

Chemistry - pH - Calculate the pH of each of the following solutions: a) .35 M ...

Grade 12 Advanced Functions - One zero of f(x)=x^3+4x^2+x+c is -3. a) calculate ...

Chemistry - Can someone please explain how to convert this, sadly I was absent ...

math - The application of one function followed by the application of a second ...

Precalculus - The application of one function followed by the application of a ...

Math ( composite functions ) - I need some help with composite functions where ...

Grammar - I'm a little confused with this question about infinitives and ...