Suppose that the cost of producing rr radios is defined by cc(rr) = 300 + 15rr − 0.3rr2. Determine which of the following
intervals has the greatest average rate of change for the
cost to produce a radio.
A Between 20 and 25 radios.
B Between 60 and 65 radios.
C Between 5 and 10 radios.
D Between 30 and 35 radios.

step-by-step explanation:

12475909

6(h+1)/2=a

a=area

step-by-step explanation:

its the same thing as a square or rectangle but after multiplying two sides you need to divide it by two.

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)

really your just stupid if you don't know this

step-by-step explanation: