Problem 194 of 7
Build a model for A rectangle area is A(x)=x(x+5). and solve when output equals 84.
Hints
Using a hint is okay. It just tells the trainer to give you a little more review.
Hidden until you reveal it.
solve quadratic or simple exponential equation.
Hidden until you reveal it.
Model must allow solving for the input from a target output.
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Correct
Your answer is equivalent to the expected form.
Solution
Walkthrough
Walkthrough shown
Full solution stays hidden until you ask for it.
1. Write the model equation.
2. Set the model equal to the target output.
3. Solve the resulting quadratic or simple exponential equation.
Use the worked steps, then substitute the final answer back into the original relationship to confirm it satisfies the prompt.
Only evaluating the model instead of solving for input.