A relation associates five foods to the food groups to which they belong:
{ (orange, fruit), (cheese, dairy) (broccoli, vegetable) (milk, dairy) (kiwi, fruit) } Which statement is true?
Answer
Vegetable is an element in the domain.
Orange is an element in the domain.
This relation is not a function.
Kiwi is an element in the range.
Question 2
Question
The equation M = 4.4n, relates the number of quarters, n, to its mass, M, in grams. What is the independent variable?
Answer
The mass of the quarters.
The value of the quarters.
The number of quarters.
Each quarter weighs 4.4 grams.
Question 3
Question
The height of a plane is a function of the time since take off. Identify the dependent variable?
The cost, C, in dollars, of renting a hall for the prom is given by the formula C(n) = 500 + 4n, where n is the number of students attending the prom. Calculate the cost of renting the hall if 70 students attend.
Answer
$108
$500
$780
$970
Question 7
Question
Hannah went for a run. The graph below shows her distance from home in km versus the time in minutes she was running for. Which of the following statements is correct?