Question

The following list details the numbers of tickets sold for a talent show grade 9:22; grade 10:32; grade 11: 41; and grade 12:30. What are the domain and range of this relation? A domain: (22, 32, 41, 30); range: {9, 10, 11, 12} B. domain: {9, 22, 10, 32); range: {11, 41, 12, 30} C. domain: {9, 10, 11, 12); range: (22, 32, 41, 30) D domain: {11, 41, 12, 30}; range: {9, 22, 10, 32)

Answer 1

The correct option is;

C. Domain: {9, 10, 11, 12}; range {22, 32, 41, 30}

Explanation:

The given parameters are;

The ticket sold at the talent show for different grades;

For grade 9, 22 tickets were sold

Grade 10, had 32 tickets sale

The number of tickets sold for grade 11 = 41 tickets

The number of tickets sold for grade 12 = 30 tickets

We note that the domain are the inputs and independent variables, x, of a function,f(x), while the range is the set of outputs, dependent, variables, of the function or the values of f(x)

Therefore, given that the domain are the independent variable, that is their values are not influenced by other variables, then the domain are the grades, which are 9, 10, 11, 12, while the range are the range are the number of tickets sold (22, 32, 41, 30) which are dependent on the grades