Problem 82 of 7
Interpret increasing/decreasing intervals of S(x) = -5(x-7)^2 + 80 in context sales based on advertising spend.
Using a hint is okay. It just tells the trainer to give you a little more review.
Hidden until you reveal it.
describe what is happening over input ranges.
Hidden until you reveal it.
Context must define what increasing and decreasing output means.
Enter your answer
Your answer is equivalent to the expected form.
Walkthrough
Full solution stays hidden until you ask for it.
1. Find the vertex input.
2. Determine increasing and decreasing sides from opening direction.
3. Translate those intervals into the context.
Use the worked steps, then substitute the final answer back into the original relationship to confirm it satisfies the prompt.
Only listing intervals without contextual meaning when interpretation is requested.