Answer:
x = 16
y = 13.8
Step-by-step explanation:
Answer:
, x = $6
Step-by-step explanation:
The expression
to represent the store's weekly profit in dollars, where x represents the price of a new video game.
Let 
We need to rewrite this quadratic function in the vertex form.




The equivalent expression that reveals the video game price that produces the highest weekly profit is 
and the price is $6
Answer:
1 second
Step-by-step explanation:
use the general quadratic formula
In <em>slope-intercept form</em>, the <em>y</em> is isolated or
by itself on the left side of the equation.
Start by subtracting 2x from both sides and we have -3y = -2x.
Then we divide both sides by -3 to get <em>y = 2/3x</em>.
Work is provided in the image below.
Answer:
Move all terms to the left side of the equation and simplify.
3x²−12x−21=0
Use the quadratic formula to find the solutions.
(−b±√b²−4(ac))/2a
Substitute the values a=3, b=−12, and c=−21 into the quadratic formula and solve for x.
(12±√(−12)²−4⋅(3⋅−21)0/2⋅3 Simplify => x=2±√11
The result can be shown in multiple forms.
Exact Form: x=2±√11
Decimal Form: x=5.31662479…,−1.31662479…
Step-by-step explanation: