Suppose that an equation is given p = −2x2 + 276x − 1000, where x represents the number of items sold at an auction and p is the
profit made by the business that ran the auction. How many items sold would make this profit a maximum? Solve this by graphing the expression in your graphing utility and finding the maximum using 2nd CALC maximum or, for the TI-89, F5 for the math menu and 4:Maximum. To obtain a good window for the curve, set x [0, 200] and y [0, 10000].
1 answer:
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Answer: The first option.
Step-by-step explanation:
If you square you get
x=0
Answer:
The number of doctors recommended flash toothpaste <u>800</u>.
Step-by-step explanation:
Given:
A magazine ad states that 4 out of 7 doctors recommend Flash toothpaste.
Now, to find the numbers of doctors recommended flash toothpaste if 1400 doctors were surveyed.
Let the number of doctors recommended be .
And the total number of doctors surveyed were 1400.
So, as given 4 out of 7 doctors recommend flash toothpaste.
So, 4 equivalent to 7 = .
And, equivalent to 1400 =
.
Thus, we set the proportion and solve by cross multiplication method:
<em>By cross multiplying we get:</em>
<em>Dividing both sides by 7 we get:</em>
Therefore, the number of doctors recommended flash toothpaste 800.