The box plots below show the lifespan, in months, of laptop batteries manufactured by four companies:

box plot labeled company a shows minimum at 19, first quartile at 19.5, median at 23, third quartile at 23.5, and maximum at 24. company b shows minimum at 21, first quartile at 22, median at 24, third quartile at 25, and maximum at 26. company c shows minimum at 20, first quartile at 21, median at 22, third quartile at 24, and maximum at 28. company d shows minimum at 19, first quartile at 20, median at 22.5, third quartile at 23.5, and maximum at 27.

based on the data, which company manufactures batteries having the greatest variation in lifespan?

company a
company b
company c
company d

I see 2 answers here. Company C and D at 8 months... (Companies A and B at 5 months)

Explanation:

I took the Maximum and subtracted it by the Minimum.

Ex. Company D: 27 (Max) - 19 (Min) = 8 months

stethere all not eveanp-by-step explanation:

delaney would like to make a 5lb nut mixture that is 60% peanuts and 40% almonds.

she has several pounds of peanuts and several pounds of a mixture that is 20% peanuts and 80% almonds.

let 'p' represent the number of pounds of peanuts needed to make the new mixture, and  

let 'm' represent the number of pounds of the 80% almond-20% peanut mixture.

:

p + m = 5

therefore

m = (5-p)

write an equation based on the percent of peanuts

1p + .2m = .6(5)

replace m with (5-p)

p + .2(5-p) = .6(5)

p + 1 - .2p = 3

p - .2p = 3 - 1

.8p = 2

p = 2/.8

p = 2.5 lbs of peanuts required

then

5 - 2.5 = 2.5 lbs of the peanut/almond mixture required

:

a) what is the system that models this situation?

p + m = 5

1p + .2m = .6(5)