As the music plays, the volume changes In the beginning of the piece can be modeled by the equation s=10Ix-4I+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 equation at what number(s) measures played would the sound level be at 80

-127

Step-by-step explanation:

s = 101x-41+50

80 = 101x - 4+ 50

-101x

-181 = x - 4 +50

-181 = x -54

+ 54

-127 = x

I hope this helps

3< x< 5

step-by-step explanation:

|x - 4| < 1

there are two solutions, one positive and one negative.   remember to flip the inequality when taking the negative solution

x-4 < 1       x-4 > -1

add 4 to each side

x-4+4 < 1+4       x-4+4 > -1+4

x< 5                 x> 3

3< x< 5

-2 is the right