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

step-by-step explanation:

use pothagarean therom

a^2+b^2=c^2 so first ac

acm is a right triangle because c= 90°

and am (the hypotenuse or c) =16+9 =25

but there is not enough info we need another angle or side length