Answer:
x= 0.4, or x = 2/5
Step-by-step explanation:
To find x you have to replace f(x) with 0 and solve for x
Hope this helps:)
Answer:
$22.5.
Step-by-step explanation:
The total revenue that is gained from the sales of the cakes is determined by multiplying the number of cakes by the price. If we let x be the number of $1 that should be deducted from the price and y be the total revenue,
y = (25 - x)(100 + 5x)
Simplifying,
y = 2500 + 25x - 5x²
We get the value of x that will give us the maximum revenue by differentiating the equation and equating the differential to zero.
dy/dx = 0 = 25 - 10x
Answer:
Option B, 1/4 (x - 5) = 13
Step-by-step explanation:
An inequality has a less than, greater than, less than or equal to, and greater than or equal to. <u>But, there are no equal signs allowed in a inequality. That makes it an expression.</u>
Answer: Option B, 1/4 (x - 5) = 13
(13.4 + 2.3y + 5.2) - (29.8 - 3.5y + 7.1)
(18.6 + 2.3y) - ( -29.8 - 3.5y)
18.6 + 2.3y + 29.8 + 3.5y
18.6 + 29.8 + 2.3y + 3.5y
41.3 + 5.8y