Chapter 1.5, Problem 30E

Sketch the graph of the function

Suppose the cuyahoga river is polluted with 285 parts per million (ppm) of a toxic substance, and local Cleveland environmental group claim they can reduce the pollution by 15ppm per year. Write an equation that represents the amount of pollution, P as a function of time, t. A) P(t)= 15 + 285t B) P(t)= 15 - 285t C) P(t)= .385- .15t D) P(t)= 285 - 15t E) P(t)= 285 - .15t

Let P = (x,y) be a point on the graph of y x-12. Express the distance, d, from P to the origin as a function of the point's x-coordinate.

(e) The instructor adds 4 points to the average exam score ofeveryone in the class. Describe the changes in the positionsof the plotted points and the change in the equation of theline.

Sketch the graph of y = 4x/(x + 1)2, x > -1.

The graph of f(x) = 2x° + 3x – 120x + 20 has two horizontal tangents. What are the values of x where these horizontal tangents occur? Submit Question

Please see attached photo

Let P= (x,y) be a point on the graph of y = x. Express the distance, d, from P to (7,0) as a function of the point's x-coordinate.