Answer:
y = 1/2x - 5
Step-by-step explanation:
y = 1/2x+b
-1 = 1/2(8) +b
-1 = 4+b
-5 = b
Let us assume then that the center is the origin. If the major axis is 18, then a = 9 and a^2=81. If the minor axis is 16, then b = 8 and b^2=64. Now you can write the equation. Remember that this ellipse is vertical and so a^2 goes under y^2
Answer:

Step-by-step explanation:
Equation of a circle:
The equation of a circle with center
is given by:

In which r is the radius.
Center (-14, -3)
This means that 
So



Passes through the point (-5,3),
This means that when
. We use this to find the radius squared. So



So, the equation of the circle is:


Using .25N, you set N equal to 18 for 18 quarters. so .25(18) = 4.50