Which of the following situations can best be modeled with a quadratic function?
For every month that passes, the number of songs stored on an MP3 player increases by 22.
The change in the number of students enrolled in a college over the previous semester is increasing by 58 each semester.
The amount of yogurt consumed by citizens of a country is increasing by 25,000 ounces every month.
The average number of minutes high school students sleep every night is decreasing by 3 minutes every 5 years.
If a change in variable x suggests a change in variable y, does the change in x cause the change in y?
always
sometimes
never
only if there is a direct relationship
Which of the following situations can best be modeled with a linear function?
For every $0.15 decrease in the price of a carton of eggs, the number of cartons purchased increases by 10 percent.
The total number of hot tamales sold is doubling every year.
The area of a circle is equal to π times the radius squared.
Every 3 months the number of potholes in the street increases by 5.
Which best describes the linear correlation between the height of the basketball player and the amount of points scored in a game?
strong positive correlation
weak positive correlation
strong negative correlation
no correlation
Which of the following situations can be modeled with an exponential function?
Corey pays $410 a month for rent.
Brittany’s income triples every 10 years.
Ralph gets paid $150 an hour
Jessica notices a constant change in temperature of her coffee with every minute that passes.
