Answer:
y = - x²
Step-by-step explanation:
Since the vertex is at the origin and the focus at (0, - 4) then the parabola opens vertically down with equation
x² = 4py ( p is the distance from the vertex to the focus )
Here p = - 4 ( focus is below the vertex ), thus
x² = 4(- 4)y = - 16y ( divide both sides by - 16 )
y = - x²
Answer:
(-3,-4)
Step-by-step explanation:
Answer:
The second rental car company is better because it is cheaper
Step-by-step explanation:
First option :
The first rental car company charges a $35 rental fee
An amount of $110 for 3 days.
So, Total cost for 3 days = 35+110=145
Second option:
The second rental car company's offer can be modeled by the equation :
Where x = number of days
y = total cost of renting a car
Substitute x = 3
y=28(3)+15
y=99
So, Total cost for 3 days = $99
So, Option 2 is cheaper
So, The second rental car company is better because it is cheaper