13.
so out of the pool houses, how many have a hot tub
21/38=0.552=55% aprox
answer is 55%
12 is correct
14 technically, it 0 and -3, -3 could also be correct if you count the negativer root
The simplify equation is 12a+5c+g-9v-10
1) Nashville = center = (-58, 55) => Xc = - 58miles, Yc = 55miles
2) radius = 8 miles
3) General equation of a circle: (x - Xc)^2 + (y - Yc)^2 = radius^2
4) equation of the circle that represents radar coveraga:
(x - (-58) )^2 + (y - 55)^2 = 80^2
=> (x + 58)^2 + (y - 55)^2 = 6400
Answer: (x + 58)^2 + (y - 55)^2 = 6400
Y = Ln (2x^3 + 3x)
then deriving
dy/dx= (1/(2x^3 + 3x))*(6x^2 + 3)
