SOLUTION: In this activity, you will create quadratic inequalities in one variable and use them to solve problems. Read this scenario, and then use the information to answer the questions th

Algebra ->  Coordinate Systems and Linear Equations  -> Linear Equations and Systems Word Problems -> SOLUTION: In this activity, you will create quadratic inequalities in one variable and use them to solve problems. Read this scenario, and then use the information to answer the questions th      Log On


   



Question 1150949: In this activity, you will create quadratic inequalities in one variable and use them to solve problems. Read this scenario, and then use the information to answer the questions that follow.
Noah manages a buffet at a local restaurant. He charges $10 for the buffet. On average, 16 customers choose the buffet as their meal every hour. After surveying several customers, Noah has determined that for every $1 increase in the cost of the buffet, the average number of customers who select the buffet will decrease by 2 per hour. The restaurant owner wants the buffet to maintain a minimum revenue of $130 per hour.
Noah wants to model this situation with an inequality and use the model to help him make the best pricing decisions.
To calculate the hourly revenue from the buffet after x $1 increases, multiply the price paid by each customer and the average number of customers per hour. Create an inequality in standard form that represents the restaurant owner’s desired revenue.
Type the correct answer in each box. Use numerals instead of words.
blankx^2 + blankx + blank≥ 130

Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
+%28+10+%2B+x%2A1+%29%2A%28+16+-+2x+%29+%3E=130+
+160+%2B+16x+-+20x+-+2x%5E2+%3E=+130+
+-2x%5E2+-+4x+%2B+160+%3E=+130+
+-x%5E2+-+2x+%2B+80+%3E=+65+
+x%5E2+%2B+2x+-+80+%3C=+-65+ ( reverse the inequality sign )
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+%28+x+%2B+10+%29%2A%28+x+-+8+%29+%3C=+-65+
+x+ has to be a positive whole number and
+x+-+8+ must be negative
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+x+=+7+ does not work
+x+=+6+ does not work
+x+=+5+ does not work
+x+=+4+ does not work
+x+=+3+ works
+x+=+2+ works
+x+=+1+ works
Geta 2nd opinion if needed