Answer:
Every day, 43% percent of people are added from the total number of people who receive the email
Step-by-step explanation:
we know that
The equation of a exponential growth function is given by
where
P(t) is the total number of people who receive the email
t is the time in days
a is the initial value
r is the rate of change
we have
so
---> initial number of people who receive the email
solve for r
Convert to percentage
so
The daily percent change in the number of people who receive the email. every day is 43%
therefore
Every day, 43% percent of people are added from the total number of people who receive the email
Answer:
x = - 13, x = - 3
Step-by-step explanation:
Given
x² + 16x = - 39
To complete the square
add ( half the coefficient of the x- term )² to both sides
x² + 2(8)x + 64 = - 39 + 64
(x + 8)² = 25 ( take the square root of both sides )
x + 8 = ± 
= ± 5 ( subtract 8 from both sides )
x = - 8 ± 5, thus
x = - 8 - 5 = - 13 or x = - 8 + 5 = - 3
Answer:
b
Step-by-step explanation:
(3, -3/2)
Answer:
Probability of selling no more than 3 properties in one week is 42%
Step-by-step explanation:
With 18 properties to sell and 40% chance of selling any one, it means that she can sell 7.2 properties (18 x 40%) in a week.
To sell no more than 3 properties in one week, the probability will be 3/7.2 x 100 = 0.4167
Probability is the chance of one event taking place out of many events. It is calculated as the number of the one event taking place divided by the total number of events. It is expressed in decimal or percentage form.
