Find the open interval(s) on which f(x) = -5x² + 50x+8 is increasing or decreasing. O increasing on (− ∞, 10); decreasing on (10, ∞) O increasing on (-∞, 16); decreasing on (16, ∞ ) O increasing on (-∞, 80); decreasing on (80, ∞) O increasing on (-∞, 40); decreasing on (40, ∞) O increasing on (-∞, 5); decreasing on (5, ∞)

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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Find the open interval(s) on which f(x) = -5x² + 50x +8 is increasing or decreasing.
O increasing on (− ∞, 10); decreasing on (10, ∞)
O increasing on (− ∞, 16); decreasing on (16, ∞)
O increasing on (-∞, 80); decreasing on (80, ∞)
O increasing on (-∞, 40); decreasing on (40, ∞)
O increasing on (-∞, 5); decreasing on (5, ∞)
Transcribed Image Text:Find the open interval(s) on which f(x) = -5x² + 50x +8 is increasing or decreasing. O increasing on (− ∞, 10); decreasing on (10, ∞) O increasing on (− ∞, 16); decreasing on (16, ∞) O increasing on (-∞, 80); decreasing on (80, ∞) O increasing on (-∞, 40); decreasing on (40, ∞) O increasing on (-∞, 5); decreasing on (5, ∞)
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