A population of ameba grows according to an exponential growth model. The size of the ameba colony is determined by measuring the diameter across it (in centimeters). The initial population size is P0=9 P0=9centimeters, and the population 1 hour later is P1=11.25
P1=11.25
centimeters. Answer the following questions:

Then:
P2=

Find an explicit formula for Pn Your formula should involve n
Pn=

Use your formula to find
P10 =

Give all answers accurate to at least one decimal place

6 on both sides and twelve on the top and the bottom

step-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)