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Mr. Wilkinson's physics class went to the football field to launch a rocket into the air. The rocket's height in feet, f(x)f(x), depends on the number of seconds, xx, that have elapsed since launch.\newlineWhat does f(8)=0f(8) = 0 tell you?\newlineChoices:\newline(A)After 88 seconds, the rocket has already landed on the field.\newline(B)The rocket starts its launch 88 feet above the ground.

Full solution

Q. Mr. Wilkinson's physics class went to the football field to launch a rocket into the air. The rocket's height in feet, f(x)f(x), depends on the number of seconds, xx, that have elapsed since launch.\newlineWhat does f(8)=0f(8) = 0 tell you?\newlineChoices:\newline(A)After 88 seconds, the rocket has already landed on the field.\newline(B)The rocket starts its launch 88 feet above the ground.
  1. Understand function and variables: Understand the function and variables.\newlineThe function f(x)f(x) represents the rocket's height in feet at xx seconds after launch. The variable xx represents the number of seconds elapsed since the rocket was launched.
  2. Interpret given function value: Interpret the given function value.\newlineThe function value f(8)=0f(8) = 0 means that at 88 seconds after the rocket was launched, its height above the ground is 00 feet.
  3. Choose correct interpretation: Choose the correct interpretation based on the function value.\newlineSince f(8)=0f(8) = 0 indicates the height is 00 feet at 88 seconds, it tells us that the rocket has returned to the ground after 88 seconds. Therefore, the correct choice is:\newline(A) After 88 seconds, the rocket has already landed on the field.

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