Answer:
y = -0.005x² + 50
Step-by-step explanation:
The diameter is 200 feet, so the parabola has roots at (-100, 0) and (100, 0). The maximum height is 50, so the vertex of the parabola is at (0, 50).
Using vertex form of a parabola:
y = a (x − h)² + k
y = a (x − 0)² + 50
y = ax² + 50
Plugging in either root:
0 = a (100)² + 50
a = -0.005
y = -0.005x² + 50
Area of a square = Side × Side
Side = 7x-3
Area of the square = (7x-3) × (7x-3)
= 7x(7x-3) -3(7x-3)
= 49x^2 -21x -21x +9
=49x^2 -42x +9
collect the like terms:
Solution: x^2-5xy+4y
P.S
get the photo math app. :)
Hope that helps.
<span>c =0.20m + 2.00
Where c is the cost and m = number of miles,
For a 2.7 mile ride, m = 2.7
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<span>c = 0.20m + 2.00, m = 2.7
</span>
<span>c = 0.20*2.7 + 2
c = 0.54 + 2
c = 2.54
Charge for the ride = $2.54
I hope this helps.
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