On the basis of past experience a company has determined that its monthly sales revenue (in dollars) is related to its advertising according to the formula s = 20x + y2 + 4xy, where x is the amount spent on print advertising and y is the amount spent on cable advertising. If the company plans to spend $34,000 on these two means of advertising, how much should it spend on each method to maximize its monthly sales revenue?

A blood bank needs 9 people to help with a blood drive. 12 people have volunteered. Find how many different groups of 9 can be formed from the 12 volunteers.

Step-by-step explanation:

A blood bank needs 9 people to help with a blood drive. 12 people have volunteered. Find how many different groups of 9 can be formed from the 12 volunteers.

here is the

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step-by-step explanation:

you can add the two numbers and divide the result by 2. or you can find the gap between the two numbers and add half of this to the smaller number.