6.8 is the answer I got on my calculator
Answer:
$245,000
Step-by-step explanation:
Let the intial cost = x
If the eqn of the parabola is f(x) = (x-4)(x+2), we need to mult. this out to find the coordinates of the vertex.
Then f(x) = x^2 + 2x - 4x - 8, and f(x) = x^2 - 2x - 8.
One way in which you can find the vertex is to calculate x = -b / (2a). Here, that comes to
-(-2)
x = ---------- = 1. f(1) = 1^2 - 2(1) - 8 = - 9. Vertex is at (1, -9).
2(1)
Find another point on the curve: Let x=0, for which y=-8. Then (0, -8) is on the curve. Plot the vertex and this point and draw a smooth parabola thru both.
Hey there!
-7x + 21 > -14
SUBTRACT 21 to BOTH SIDES
-7x + 21 - 21 > -14 - 21
SIMPLIFY IT!
NEW EQUATION: -7x > -35
DIVIDE -7 to BOTH SIDES
-7x/-7 > -35/-7
SIMPLIFY IT!
x < 5
Therefore, your answer is: x < 5
Good luck on your assignment & enjoy your day!
~Amphitrite1040:)
Answer:
a) 5x + x AND 6x
b) 5 + 40y
Step-by-step explanation:
