Given that f (x) = 2x + 1 and g(x) = 6 - x, find the following. If necessary, use a 0 in the denominator!

Question

Given that f (x) = 2x + 1 and g(x) = 6 - x, find the following. If necessary, use a 0 in the denominator!

a. ( f + g) (2) = ____________

b. ( f - g) (-5) = ___________

c. ( g - f) (4) = ____________

d. ( f ⋅ g) ( 1/2) = ___________

e. ( f/g) (-1) = _____________

Answer 1

Begin by plugging in the number in second parenthesis into each f(x) equation then g(x) equation.

example a.

f(x) = 2(2) +1

f(x) = 5

g(x) = 6-2

g(x) = 4

Once you have the individual answers, do the operation that is indicated in the beginning.

example a continued

(f+g)= 5 + 4

(f+g) = 9