4%
To find the percentage, first find the area of both circles. The area formula is

. After finding the area of the center of the target (19.625) and the area of the large target (490.625), set up a percent proportion to determine the percentage that the center takes up:


Cross multiplying and dividing by 490.625 will give a total of 4%.
The y-intercept of 1000 in the graph is at the point where x is equal to 0.
At
, it means no month have passed. It is the initial point where Zen deposited the money.
What is the amount (y axis)? 1000!
So y represents the initial deposit of Zen, which is 1000.
ANSWER: Answer choice D (Amount of money Zen deposited in the savings account)
Answer:

Step-by-step explanation:
Given differential equation,


Let y = vx
Differentiating with respect to x,

From equation (1),








Integrating both sides,




Now, y = vx ⇒ v = y/x
