An exponential model can be described by the function
where: a is the initial population or the starting number, b is the base and x is the number of periods elapsed.
When the base of an exponential model is greater than 1 it is called a growth factor, but when it is less than 1 it is called a decay factor.
Given the exponential model
n is the final output of the exponential model, 20.5 is the starting number, 0.6394 is the base and t is the number of periods/time elapsed.
Here, the base is 0.6394 which is less than 1, hence a decay factor.
Therefore, <span>the
base, b, of the exponential model is 0.6394; It is a
decay factor.</span>
Emily can rake 1/5 of the lawn in an hr.
Andrew can rake 1/8 of the lawn in an hr.
Together, they rake 1 yardful. x represents time in hours.
(1/5)x+ (1/8)x= 1
Multiply all values by 40
8x+5x=40
13x=40
x= 40/13
x=3.0769...
Final answer: 3 hours
Answer:
why is the paper wet….
Step-by-step explanation:
c
Answer:
A=66
Step-by-step explanation:
Answer:
Width of the rectangle is:
Option C is correct.
Step-by-step explanation:
Area of rectangle =
Length of rectangle =
We need to find width of rectangle.
The formula used is:
Putting values in the formula to find Width of rectangle
Using the exponent rule:
and simplifying the terms we get
So, Width of the rectangle is:
Option C is correct.