A person was modeling a growing population with a growth factor of 1.5 using pennies. They started with 4 pennies and flipped all 4 pennies. For every penny that landed heads up another penny was added to the pile. Then, the new pile of pennies are all flipped and again for each one landing on heads another penny was added. The process is repeated several more times. Which of the below would the most reasonable number of pennies to be expected to be in the pile after pennies were added just after the 5th flip?​

because they could drop even lower..

answer: 12   they all have at least 28 days

step-by-step explanation: haha

it is 10.6 according to my calculations

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)