For this case we have that by definition, a linear function is of the form

We have the following options:
A) 
Rewriting:

It's a quadratic function!
B) 
Rewriting:

It's a linear function!
C)
Rewriting:

It's a cubic function.
D) 
Rewriting:

It's a quadratic function!
E)
Rewriting:

It's a cubic function!
Answer:
The linear function is option B
Answer:
Width = 7. Length = 9.
Step-by-step explanation:
To get the the size of the width, it says that L = (W + 2), so we put in W+2 as a substitute for L. Now we have the equation the area or 63 = W x (W+2). I'm not so great with these problems so I typically just plug in a number for W till I get the area, and put w into the L = W + 2 equation to get L.
Answer:
The Amount of money in the account after 20 years $22,416.
Step-by-step explanation:
Given as :
The principal deposited into account = $4000
The rate of interest = 9% compounded annually
The time period for deposit = t = 20 years
Let the amount into account after 20 years = $A
now, According to question
<u>From compound Interest method</u>
Amount = principal × 
Or, A = $4000 ×
Or, A = $4000 ×
Or, A = $4000 × 
or, A = $4000 × 5.604
So, The amount in account after t years = A = $22,416
Hence, The Amount of money in the account after 20 years $22,416. Answer