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# Can Anyone Help Me with This Quadratic Equation?

Topic: Problem solving with large numbers
June 20, 2019 / By Paisley

Marcelyn | 4 days ago
You've left out the equation. I've answered this question several times already, so here you go. -0.2x^2+12x+11 a. It opens down because the coefficient of x^2 is negative. b. The sales will increase, reach a peak, and then decrease. c. Set -0.2x^2+12x+11 = 0 and solve for x. The last day will be the larger of the two numbers. d. Peak. The parabola opens down, so that means there will be a maximum. e. Find the vertex of the parabola. The x-coordinate represents when the peak will occur. f. The y-coordinate of the vertex represents how many tickets will be sold on the day of the peak. g. Answered in parts e and f. h. Two. You should have found them both in part c. i. I didn't solve the equation, but if one of your solutions was negative, then this would not make sense because you don't don't about how many negative days have passed. Here is a link to the search results where you can find different versions of the answers. Some are correct; some are not. http://answers.yahoo.com/search/search_r...
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You've left out the equation. I've answered this question several times already, so here you go. -0.2x^2+12x+11 a. It opens down because the coefficient of x^2 is negative. b. The sales will increase, reach a peak, and then decrease. c. Set -0.2x^2+12x+11 = 0 and solve for x. The last day will be the larger of the two numbers. d. Peak. The parabola opens down, so that means there will be a maximum. e. Find the vertex of the parabola. The x-coordinate represents when the peak will occur. f. The y-coordinate of the vertex represents how many tickets will be sold on the day of the peak. g. Answered in parts e and f. h. Two. You should have found them both in part c. i. I didn't solve the equation, but if one of your solutions was negative, then this would not make sense because you don't don't about how many negative days have passed. Here is a link to the search results where you can find different versions of the answers. Some are correct; some are not. http://answers.yahoo.com/search/search_r...