The equation y = 1,500 – 30x can be used to estimate the number of cars in a parking lot x minutes after the end of a concert. What is the meaning of the slope of the linear model?
About 30 cars will be in the lot when the concert ends.
About 1,500 cars will be in the lot the when concert ends.
About 1,500 cars leave every minute after the concert ends.
About 30 cars leave every minute after the concert ends.
A charity event raised 4 × 10^6 dollars for research. This amount was 5 times as much money as the event raised the previous year. How much money did the event raise the previous year?
8 × 10^5 dollars
8 × 10^6 dollars
2 × 10^7 dollars
2 × 10^6 dollars
A square has an area of 36 square feet. A second square has an area of 144 square feet. How much greater is the side length of the second square than the side length of the first square?
6 feet
108 feet
54 feet
12 feet
Mr. Jones is a driver education instructor. He compared the number of times, x, eight students attended driving practice and their scores, y, on a written driving exam. Modeled by the equation y = 5x + 60. What does the y-intercept mean?
Expect to get an exam score of 5 if there is no practice.
Expect to get an exam score of 60 if there is no practice.
An exam score should increase about 60 points per practice.
An exam score should increase by about 5 points per practice
In which set of points is y a function of x?
{(3, –2), (3, 0), (3, –4), (3, 2)}
{(2, 4), (1, 4), (–2, 4), (–1, 4)}
{(3, –2), (0, 0), (4, –3), (3, 2)}
{(–2, 3), (0, 3), (–2, 0), (3, 3)}
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