Answer:
y=-2 is the correct answer...
Answer:
(2) (100, 300)
Step-by-step explanation:
One wave can be divided on 4 parts, as show on the picture.
Since a length of one whole wave equals 400, a length of each part is
nanometers.
The height of the wave is decreasing on the second and on the third part, hence over the interval (100, 300).
Answer:

Step-by-step explanation:
We are asked to find the tangent line approximation for
near
.
We will use linear approximation formula for a tangent line
of a function
at
to solve our given problem.

Let us find value of function at
as:

Now, we will find derivative of given function as:




Let us find derivative at 

Upon substituting our given values in linear approximation formula, we will get:


Therefore, our required tangent line for approximation would be
.
Answer:
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Step-by-step explanation:
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Given:
Principal (P)= $1,000
Rate of interest (R)= 4% = 0.04
Simple interest (I)= $100
To find:
The time for which she deposits $1000 into a savings account at 4% simple interest.
Solution:
The formula for simple interest is

On substituting P=1000, R=0.04 and I=100 in the above formula, we get


Divide both sides by 40.


Therefore, the required time is 2.5 years.