Answer:
y = (x + 1)²
Step-by-step explanation:
The equation of a parabola in vertex form is
y = a(x - h)² + k
where (h, k) are the coordinates of the vertex and a is a multiplier
Here (h, k) = (- 1, 0) , then
y = a(x + 1)² + 0
To find a substitute (0, 1), the y- intercept into the equation
1 = a(0 + 1)² = a
the cost per pound is 1.45 .
D, x = (ln(0.5) - 1)/2
8e^(2x+1) = 4
e^(2x+1) = 0.5
2x+1 = ln(0.5)
2x = ln(0.5) - 1
x = (ln(0.5) - 1)/2
2/5 +1/4 = 8/20 + 5/20=13/20
center is at (8, -1) and the radius is 9
