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DVD Video Rentals (Refer to Example 3.) The func-

tion V computes the percent share of disc DVD rentals
accounted for by various companies. This function is
defined by V(R) = 37, V(N) = 30, and V(S) = 17,
where R is Redbox, N is Netflix, and S is rental stores.
(Source: Business Insider.)
(a) Write V as a set of ordered pairs.
(b) Give the domain and range of V.
T

User Shon
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1 Answer

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19 votes

Answer:


(a)\ V = \{(N,30),(R,37),(S,17)\}


(b)


Domain = \{N,R,S\}


Range = \{37,30,17\}

Explanation:

Given


V(R) = 37,\ V(N) = 30,\ V(S) = 17

Solving (a): Set of ordered pair

A function y = f(x) is represented as (x,y)

So, the ordered pair of V is:


V = \{(R,37),(N,30),(S,17)\}

Order the alphabets in increasing order


V = \{(N,30),(R,37),(S,17)\}

Solving (b): The domain and the range

In a function
\{(x_1,y_1),...,(x_n,y_n)\}

The domain and the range are represented as:


Domain = \{x_1,x_2....x_n\}


Range = \{y_1,y_2....y_n\}

So, we have:


Domain = \{N,R,S\}


Range = \{37,30,17\}

User Luca Borrione
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