7.) At the beginning of the summer, the waterlevel of a pond is 2 feet below its normal level.After an unuSually dry summer, the water level ofthe pond dropped another 1 feet.farWrite an equation to show how above or belowthe normal water level the pond is at the end ofthe summer.

Answered: Image /qna-images/answer/96b9dea8-b227-47d4-8a7a-18e6cea42ec1.jpg

Answered: 7.) At the beginning of the summer, the…

Advanced Engineering Mathematics

10th Edition

ISBN:9780470458365

Author:Erwin Kreyszig

Publisher:Erwin Kreyszig

Chapter2: Second-order Linear Odes

Section: Chapter Questions

Problem 1RQ

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A man is walking up a hill. Suppose y is his elevation in feet, and x is time in minutes, the equation for her elevation versus time is giving as y = 10 x + 50. What is the man elevation when he initially started his walking up the hill.
Cristina believes that her score on an upcoming test can be modeled by the equation y=5.6x+57y=5.6x+57 where xx represents the number of hours spent studying, and yy represents Cristina's test score. Assuming this equation is accurate, predict Cristina's test score if she studies for 1 hour. Assuming this equation is accurate, predict Cristina's test score if she studies for 4 hours.
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While painting his house one day, Mr. Cabana had a terrible accident! The bottom of the 20-foot ladder he was standing on started to slide away from the wall! a. Draw a diagram of this situation. Then write an equation that relates the sides of that shape in your diagram. b. Mr. Cabana wants to know how fast he is falling when the ladder is 10 feet above the ground. You need to help him solve this problem, but the equation you wrote in part (a) does not involve rates. What Calculus tools can you use to convert the equation in part (a) to a rate equation? c. Explain why the rate the ladder is sliding down the wall must be related to the rate that the foot of the ladder moving along the ground.
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Morgan's Mediterranean Restaurant has found that the number of falafel plates sold can be modeled by the equation y=1.8x+9.2y=1.8x+9.2 where xx represents the number of years since 2015, and yy represents the number of falafel plates sold, in thousands. Predict the number of falafel plates the restaurant will sell in 2027. Incorrect Predict the number of falafel plates the restaurant will sell in 2033.
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7.) At the beginning of the summer, the water level of a pond is 2 feet below its normal level. After an unuSually dry summer, the water level of the pond dropped another 1 feet. far Write an equation to show how above or below the normal water level the pond is at the end of the summer.