SOLUTION: hi I have a problem that i'm not sure how to do. the directions are - Suppose f(x)= 2x - 5 and g(x)=|-3-1| Find each value. the problem is {{{ f(1) + g(2) }}} I don

Question 99201This question is from textbook
: hi I have a problem that i'm not sure how to do.
the directions are - Suppose f(x)= 2x - 5 and g(x)=|-3-1| Find each value.
the problem is

I dont understand what I have to do. I know how to substitute things when there is an x but not when there is a number and it's really confusing me! Could you please help me out! This question is from textbook

Answer by Adam(64) (Show Source): You can put this solution on YOUR website!
f(x) and g(x) are functions - some rule of pairing, let's say we've got set A and want to assign every number from our set any different number, according to some pattern equation perhaps that could be y = x^2 = f(x) = x^2 value of function at any general point x. f(2) means value of function at point 2. if function is given by f(x) = 2x-5 then f(1)= 2*1-5= -3 and if g(x)=|-3-1| (you cannot substitute, because you do not have where - value of function g is constant and does not depend on value of x thus f(1)+g(2)=-3+|-3-1|
=(-3)+|-4|
=4-3
=1

that green line represents g(x) = see that for any x on x-axis(horizantal) there is same value on y-axis(vertical) function f(x) is different values of y depend on values of x
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