Question

Data about the sound levels from a new speaker are collected at a manufacturing facility and are used to calculate the model ŷ = 63.8(0.925)x, where x represents the distance from the speaker in meters and ŷ represents the predicted sound level in decibels. Interpret the percent rate of change of the model in the context of the problem.

For every increase in one meter from the speaker, the sound level is predicted to increase by about 7.5%.
For every increase in one meter from the speaker, the sound level is predicted to increase by about 92.5%.
For every increase in one meter from the speaker, the sound level is predicted to decrease by about 7.5%.
For every increase in one meter from the speaker, the sound level is predicted to decrease by about 92.5%.

Answer 1

Working on it

Answer 2

Y=63.8(0.925)^x
It tell us it's decaying

Answer 3

The percent rate of change is found by subtracting the decay factor (0.925) from 1 and then converting it to a percentage. This tells us by what percentage the sound level decreases for each additional meter...

Answer 4

Which gives us 7.5 or 15/2

Answer 5

So your answer is C

Answer 6

What's the next one