Problem 30 of 7
Interpret the initial value 100 in the exponential function R(d)=100(0.9)^d for amount of radioactive substance after d days.
Using a hint is okay. It just tells the trainer to give you a little more review.
Hidden until you reveal it.
connect leading coefficient to starting amount.
Hidden until you reveal it.
Exponential model must be in unshifted a*b^x form.
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Your answer is equivalent to the expected form.
Walkthrough
Full solution stays hidden until you ask for it.
1. Find the coefficient multiplying the exponential expression.
2. Evaluate the model at input zero.
3. State that value in the context.
Use the worked steps, then substitute the final answer back into the original relationship to confirm it satisfies the prompt.
Interpreting initial value as growth factor.