Question

If f(x) = -+ 3x + 5 and g(x) = x2 + 2x, which graph shows the graph of (f + 9)x)?

Answer 1

Answer:

$(f+g)(x)=x^2+5x+5\\(f+g)(x)=x^2-x+5$

Step-by-step explanation:

$g(x)=x^2+2x$

$if\ f(x)=3x+5\\(f+g)(x)=f(x)+g(x)\\=x^2+5x+5$

$if\ f(x)=-3x+5\\(f+g)(x)=f(x)+g(x)\\=x^2-x+5$

Graphs are attached.