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A wildlife biologist uses the formula above to estimate the height h, in centimeters, of an elephant from its foot to its shoulder, based on the circumference c, in centimeters, of the elephant’s footprint.
If the wildlife biologist finds a circular elephant footprint that has a diameter of 30 centimeters (cm) while on a zoological study, which of the following is closest to the biologist’s estimate of the elephant’s height?
The circumference c of a mother elephant’s circular footprint is 4 times the circumference of a baby elephant’s circular footprint. What is the ratio of the height of the mother to the height of the baby?
An airplane flies directly from a city in Pennsylvania to a city in Ecuador. The equation above estimates the distance d, in miles, from the city in Ecuador of the airplane t hours after taking off from the city in Pennsylvania.
Which of the following is the best interpretation of the number 2,565 in this context?
According to the equation, approximately how many hours will it take the airplane to travel between the two cities?
The scatterplot above shows the average fuel economy for a certain class of car driven at 12 different speeds. The graph of a quadratic model for the data is also shown.
For what fraction of the 12 speeds does the model overestimate the average fuel economy?
The quadratic model predicts the average fuel economy to be 26 miles per gallon for how many different speeds?