DN A chemical substance has a decay rate of 8.1% per day. The rate of change of an amount of the chemical after t days is given by
dt
= -0.081N.
a) Let No represent the amount of the substance present at t = 0. Find the exponential function that models the decay.
b) Suppose that 700 g of the substance is present at t = 0. How much will remain after 2 days?
c) What is the rate of change of the amount of the substance after 2 days?
d) After how many days will half of the original 700 g of the substance remain?
.
a) N(t) - No e -0.0810
b) After 2 days, I will remain.
(Round to the nearest whole number as needed.)

or

answer: 40392

step-by-step explanation:

10098 x 4 = 40392

1. sometimes

2.   never

3   .08c = 7.50+.05c   250 pages

step-by-step explanation:

1.   sometimes

the theoretical probability of rolling a 1 is 1/6.   perhaps you got really lucky and never rolled a 1   in those 60 times.   your experimental probability is 0.   or perhaps you rolled a 1   20 times.   your experimental probability is 20/60 is 1/3.     it really just depends on how you rolled in that experiment.

2.   never

the probability of the event occurring is 1.   that is being 100 % sure it will happen.   that is the maximum amount of confidence we have.

3.   no customer card cost:   .08 times number of pages

customer card cost:   7.50 + .05 times number of pages

we want to find when it costs the same amount, so we will set these equal

let c = number of pages

.08c = 7.50+.05c

subtract .05c from each side

.08c-.05c = 7.5+.05c-.05c

.03c=7.5

divide each side by .03

.03c/.03 = 7.5/03

c =250  

the cost is the same at 250 pages