During a musical an orchestra is playing. As the music plays, the volume changes in the beginning of the piece can be modeled by the equation s = 10│x - 4│+ 50 where s represents the sound level in decibels and x represents the number of measures of music played. Explain in words each step to find the following question: At what number(s) measures played would the sound level be at 80 decibels?

The numbers of measure of music played are 1 and 7

Step-by-step explanation:

Given

Required

Solve for x when s = 80

Substitute 80 for x

Subtract 50 from both sides

Divide through by 10

Reorder

This can be split into

or

Solve for x

or

or

Hence:

The numbers of measure of music played are 1 and 7

explanation:

previous steps have made pa≅ pb ≅ st ≅ su. setting the compass width to ab allows you to make tu the same length. then δstu ≅ δpab by the sss congruence postulate, and ∠p ≅ ∠s by the reason cpctc.

51840000 cm 2

step-by-step explanation: