Function Operations

Question 1

f(x) = x2 + 1 g(x) = 5 – x(f + g)(x) =

Revolt · Accepted Answer

x2 – x + 6

Question 2

(f – g)(x) =

Revolt · Accepted Answer

x2 + x – 4

Question 3

Evaluate 3h(2) + 2k(3) = .

Revolt · Accepted Answer

17

Question 4

f(x) = x + 2 g(x) = x – 4(f g)(x) =

Revolt · Accepted Answer

x2 – 2x – 8

Question 5

(rs)(4) =

Revolt · Accepted Answer

8

Question 6

h(x) = x2 + 1 k(x) = x – 2(h + k)(2) =

Revolt · Accepted Answer

5

Question 7

A company makes and sells charm bracelets. The cost of producing x bracelets is represented by the function C(x) = 180 + 8x. The revenue earned from selling x bracelets is represented by the function R(x) = 20x. Write and simplify a function P that represents the profit made from selling x bracelets.How many bracelets must the company sell to break even?

Revolt · Accepted Answer

P(x) = 12x - 180. The company must sell 15 bracelets to break even.

Question 8

Question 11

Revolt · Accepted Answer

2

Question 9

(h – k)(3) =

Revolt · Accepted Answer

9

Question 10

All real numbers

Revolt · Accepted Answer

All real numbers

Function Operations Answers

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