Decide whether each situation sounds like it would be better modeled by a linear or quadratic function, and circle your answer.

1 A car is 50 miles away, traveling at 65mph. How far away is the car after each hour?

Linear

Quadratic

2 A ball is dropped from the top of the Empire State Building, and it keeps dropping faster and faster. How far has the ball dropped after x seconds?

Linear

Quadratic

3 The data plan for a cell phone bill costs $5/gb, plus $15/mo. How much is the bill for a given month, after x number of gigabytes?

Linear

Quadratic

4 A ball is dropped from the top of the Empire State Building, and it keeps dropping faster and faster. How fast is the ball moving after x seconds?

Linear

Quadratic

5 A cannonball is fired from the deck of the S.S. Parabola, and arcs through the sky before hitting its target, 17 miles away.

Linear

Quadratic

6 The area of a circle, as its radius increases.

Linear

Quadratic

7 The circumference of a circle, as its radius increases.

Linear

Quadratic

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