Describe the set of inputs, the function rule, and the set of outputs for each function. А. 1. The amount of battery charge of a cellular phone is a function of the number of hours of use. 2. An...

Extracted text: Describe the set of inputs, the function rule, and the set of outputs for each function. А. 1. The amount of battery charge of a cellular phone is a function of the number of hours of use. 2. An athlete's shoe size is a function of the athlete's length of foot. 3. The amount of water on graduated cylinder displaced by same- size marbles is a function of the number of marbles. 4. The hardness of sounds one hears is a function of his/her distance from the source of sound. 5. The number of text messages that can be sent depends on the amount of prepaid load bought.


Extracted text: D. Determine whether each statement is true or false. Explain each answer. 17. If a function is represented by a set of ordered pairs, then, no second two pairs have the same component. 18. Every line on a Cartesian coordinate plane represents a function. 19. The relation y=x is not a function. 20. An element of the range of a function may be used more than once. 21. The equation x* + y' =1 represents a function.