Answer:

Step-by-step explanation:
Given


Required
Write an equation to determine the payment at a given week
At week 1, she'd have paid $8
At week 2, $16
Week 3, $24
..
.
This leads to arithmetic progression (AP):
8, 16, 24.....
To further solve, we'll make use of AP formula

In this case;



So, the equation becomes


Collect Like Terms


The above represents the amount paid at a particular week;
Amount owed, L is then calculated as follows;



Answer:
a) Linear
b) Linear
c) Linear
d) Neither
See explanation below.
Step-by-step explanation:
a) 
For this case the differential equation have the following general form:

Where
and
and since n>1 we can see that is a linear differential equation.
b) 
We can rewrite the following equation on this way:

For this case the differential equation have the following general form:

Where
and
and since n=0 we can see that is a linear differential equation.
c) 
For this case we can write the differential equation on this way:

For this case the differential equation have the following general form:

Where
and
and since n=0 we can see that is a linear differential equation.
d) 
For this case we can't express the differential equation in terms:

So the is not linear, and since we can separate the variables in order to integrate is not separable. So then the answer for this one is neither.
Answer:
area of triangle = 4.5*6/2 = 13.5 sq.yd.
Step-by-step explanation:
The area of a right triangle is half of the product of the sides adjacent to the right angle.
Here the sides adjacent to the right angle are 6 yd and 4.5 yd.
Therefore the
area of triangle = 4.5*6/2 = 13.5 sq.yd.
Answer:
5y + 15x = 25, 9x - y = -4
Step-by-step explanation:
The standard form is Ax + By = C. We can make this simple by first creating the slope intercept equations of both questions:
1. y = (-3/5)x + 5
2. y = 9x + 4
For the first one, we must first get rid of the denominator by multiplying everything by 5, so we get 5y = -15x + 25, and then you can add 3x to both sides to arrive at your first standard eqn, 5y + 15x = 25.
For the second, all you need to do is swap the y and the 4, subtracting both y and 4 from each side, arriving at 9x - y = -4