Answer:
See attachment
Step-by-step explanation:
We want to graph .
We can graph this function easily by applying transformations to the parent function.
The base function is
The transformed function has an amplitude of 3 but is shifted 1 unit down, so the minimum value is -4 and the maximum is 2.
The function is shrunk horizontally by a factor of 1/2.
The graph of the transformed function is shown in the attachment
Answer:
<u>X=7,-3</u>
Step-by-step explanation:
x^(2)-4x-21=0
(x-7)(x+3)=0
x=7,x=-3
Answer:
0.24---> 24/100 ---> 6/25
Step-by-step explanation:
hope that helps
Question
a) What is the decay factor?
b) What is the percent decrease?
c) Estimate the number of black and white TV's sold in 1999.
Answer:
a. Decay factor = 0.85
b. Percent decrease = 15%
c. 19.363 million TVs were sold
Step-by-step explanation:
Given
Solving (a): The decay factor
An exponential function has the form
Where b is:
By comparison:
Solving (b): Percentage decrease:
Percentage decrease P is calculated as follows:
Substitute 0.85 for b
Convert to percentage
Solving (c): TVs sold in 1999
First, we need to determine the value of t for 1999
In 1997, t= 0
In 1998, t= 1
In 1999, t= 2
So, we substitute 2 for t in:
23. 3^2 is 9 and 9 x 2 = 18 + 5 = 23