Answer:
the function shows growth of a factor of 2
Step-by-step explanation:
Answer:
7. C
8. D
Step-by-step explanation:
7. The interest rate is 8% or .08. You find that by solving I=Prt (interest=original amount*rate*time in years)
8. The discounted price would be $48 (80*(1-.40)) Then you multiply that 48 by .08 and add that amount to the $48.
Answer:

Step-by-step explanation:
Given

Perpendicular to 
Required
Determine the line equation
An equation has the form

Where

By comparison with 

Because the line is perpendicular to
, the following relationship exists
i.e. the condition for perpendicularity
Where m1 is the slope of the equation that passes through 
So, we have:


The line equation is then calculated using:

Where


So, we have:


Add 11 to both sides



<em>The B, C and D parts of your question are not clear.</em>
<em>Apply the same steps used in (a) above and you'll get your answers</em>