rms of Q. at the value of P is halved wher x+1)². When x = 4, y = 100. %3D rms of x. of y when x = 8. %3D ntage change in y when x is incr

Calculus: Early Transcendentals
8th Edition
ISBN:9781285741550
Author:James Stewart
Publisher:James Stewart
Chapter1: Functions And Models
Section: Chapter Questions
Problem 1RCC: (a) What is a function? What are its domain and range? (b) What is the graph of a function? (c) How...
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Q19
18.
It is given that P is directly proportional to the cube root of Q. When Q = 64, P = 24.
%3D
(a) Express P in terms of Q.
Explain
Peter claims that the value of P is halved when Q is halved. Do you agree? Explain your answer.
19.
It is given that y a (x+ 1)´. When x = 4, y = 100.
(a) Express y in terms of x.
(b) Find the value of y when x = 8.
Find the percentage change in y when x is increased from 4 to 8.
(c)
Transcribed Image Text:18. It is given that P is directly proportional to the cube root of Q. When Q = 64, P = 24. %3D (a) Express P in terms of Q. Explain Peter claims that the value of P is halved when Q is halved. Do you agree? Explain your answer. 19. It is given that y a (x+ 1)´. When x = 4, y = 100. (a) Express y in terms of x. (b) Find the value of y when x = 8. Find the percentage change in y when x is increased from 4 to 8. (c)
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