A cheetah can run 103 feet per second. A zebra can runs x feet per second. Write and simplify an expression that represents how many feet farther the cheetah can run in 10 seconds.

Solve for the time it takes the cheetah to reach the moving antelope, and see if it exceeds 20 s.

Position of antelope at time t:

x = 650 + 60t

The cheetah must arrive at the same place at the same time:

x = 90t

650 + 60t = 90t

30t = 650

t = 650/30 ≅ 21.7 s

It takes the cheetah a little more than 20 s running at 90 ft/s to reach the moving antelope, so assuming the antelope can maintain its speed of 60, it is safe. The friend is not correct.

Step-by-step explanation:

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step-by-step explanation:

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