Question

Which of the following are functions of x?

(e) The tuition a student ends up paying if he or she goes to college x in a specific year.

(f) The birth date of a person x.

(g) The profit you make from selling x wazoos, where each wazoo sells for 10 cents and costs 5 cents to make, including all cost of production.

Answer 1

in option (e) there is no relationship between independent and response variable.

because in case when he or she goes to college x in a specific year. and result is that The tuition a student ends up paying .

similarly in case of (f) there is no relationship between date of birth of a person(x) .it is completely random not a function of x .

next , in case of option (g) , it is given that each wazoo sells for 10 cents and costs 5 cents and then profit can be given by

profit f(x)=x(10-5)= 5x

hence option (g) is correct.

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