Evaluating Adding and Subtracting Functions

Two functions are given. h(x) = 3x - 5 g(x) = x^2 + 5 Find h(x) + g(x).

f(n)=2n+1
g(n)=3n
Find f(n)+g(n)

• 5n+1

• -5n+1

• -2n+1

• -6n-1

f(n)=n²+4n
g(n)=-n-5
Find f(n)+g(n)

• n²+3n-5

• -n³+2n-7

• n³+3n-3n

• n²-3n-5

f(n)=x²+1
g(n)=2x-5
Find f(n)-g(n)

• x²-2x+6

• -x²+2x+4

• -x²-2x-6

• x²-2x-4

Find (f + g) (x)

• 5x² + 3x

• 4x² + 3x

• 5x² - 3x

• 4x² - 40x

Evaluate the given function.

Mathematical Equivalence

ON

Evaluate the given function.

Mathematical Equivalence

ON

When f(x) = 9 - 3x and g(x) = 5x - 7 find f(x) + g(x).

• 14x - 10

• -8x + 2

• 2x + 2

• 2x - 2

f(-2)=​ (a)  

g(-2)=​ (b)  

h(-2)=​ (c)  

• 3

• 6

• -3

• -6

• 5

• -5

• 11

• -11

If f(x) = 3x - 2 and g(x) = 2x + 1, find (f - g)(x).

• x - 3

• 3 - x

• 5x - 1

• 5x - 3