To find the number of Hamburgers sold on Monday, set up an equation and solve for 'x'. 350 hamburgers were sold on Monday.
To find the number of hamburgers sold on Monday, let's assume the number of hamburgers is 'x'. Given that there were 61 fewer cheeseburgers sold, the number of cheeseburgers can be represented as 'x - 61'. The combined total of hamburgers and cheeseburgers sold is 639, so we can set up the equation: x + (x - 61) = 639.
Simplifying the equation, we have 2x - 61 = 639.
Adding 61 to both sides gives 2x = 700. Dividing both sides by 2, we find x = 350.
Therefore, 350 hamburgers were sold on Monday.
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Answer:
maximum at (4, 9)
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
y = - 1(x - 4)² + 9 is in this form
with vertex = (4, 9)
• If a > 1 then vertex is a minimum
• If a < 0 then vertex is a maximum
here a = - 1 , hence vertex (4, 9) is a maximum