This is challenging. this will definitely prove that you are

y = 2x + 13

Positive value:

2x + 13 > 0

2x > -13

x > -6.5

Negative value

2x + 13 < 0

2x < -13

x < -6.5

y=2x+13

y>0 would be a positive value

2x+13>0

subtract 13 from each side

2x >-13

divide by 2

x > -13/2

x > -6 1/2

y < 0 is a negative value

2x+13 < 0

2x<-13

x < -13/2

x < -6 1/2

if x > -6 1/2  it has a positive value

if x< -6 1/2 it has a negative value

x= -6 1/2  it equals 0

every 5 customers that walk in, only 2 buy popcorn.

step-by-step explanation:

basically 2/5.

brainliest would be appreciated.

step-by-step explanation: