Answer:
--- function
The monthly rate is 10%
Step-by-step explanation:
Given
Let

So, we have:
--- Monday
--- One month later
Required
The function
The function is represented as:
In
, we have:




In
, we have:


Substitute: 

Solve for b


So, the function is:


To calculate the monthly rate (r), we have:

Compare to: 

Make r the subject

Substitute 


Express as percentage


Answer:
y= -2x -8
Step-by-step explanation:
I will be writing the equation of the perpendicular bisector in the slope-intercept form which is y=mx +c, where m is the gradient and c is the y-intercept.
A perpendicular bisector is a line that cuts through the other line perpendicularly (at 90°) and into 2 equal parts (and thus passes through the midpoint of the line).
Let's find the gradient of the given line.

Gradient of given line




The product of the gradients of 2 perpendicular lines is -1.
(½)(gradient of perpendicular bisector)= -1
Gradient of perpendicular bisector
= -1 ÷(½)
= -1(2)
= -2
Substitute m= -2 into the equation:
y= -2x +c
To find the value of c, we need to substitute a pair of coordinates that the line passes through into the equation. Since the perpendicular bisector passes through the midpoint of the given line, let's find the coordinates of the midpoint.

Midpoint of given line



Substituting (-3, -2) into the equation:
-2= -2(-3) +c
-2= 6 +c
c= -2 -6 <em>(</em><em>-</em><em>6</em><em> </em><em>on both</em><em> </em><em>sides</em><em>)</em>
c= -8
Thus, the equation of the perpendicular bisector is y= -2x -8.
<span>A. 54°; acute is the answer</span>
The answer is 40 EXPLANATION: 6% of 30 is 20%. 20% of 200 is 40