Problem 8 of 7
Given f(d)=100-2d and g(d)=50-d, form and interpret (f+g)(d) for remaining distances for two people in a race after d minutes.
Hints
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form (f+g)(x) and interpret.
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Functions must have compatible output units for addition.
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Correct
Your answer is equivalent to the expected form.
Solution
Walkthrough
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1. Add the output expressions term by term.
2. Combine like terms.
3. Interpret the new output as the combined total.
Use the worked steps, then substitute the final answer back into the original relationship to confirm it satisfies the prompt.
Adding functions with incompatible output units.