Andy's average driving speed for a 4-hour trip was 45 miles per hour. During the first 3 hours he drove 40 miles per hour. What was his average speed for the last hour of his trip? Algebra Quadratic Equations and Functions Linear, Exponential, and Quadratic Models 1 Answer sankarankalyanam Jul 25, 2018 #color(indigo)("Average of speed of Andy in " 4^(th) " hour =60 " mph"# Explanation: #"Dist. travelled by Andy in four hours " = 4 * 45 = 180 " miles"# #"Dist. travelled in first 3 hrs " = 3 * 40 = 120 " mile"# #:. "Dist. travelled in " 4^(th) " hour " = 180 - 120 = 60 " miles"# #color(indigo)("Average of speed of Andy in " 4^(th) " hour =60 " mph"# Answer link Related questions What is the linear regression line? How do you determine if the following data set is linear or quadratic: (-4,10), (-3,7), (-2,4),... How do you know if the following data set is exponential: (0,120), (1, 180), (2, 270), (3, 405)? How do you use the graphing calculator to find the linear regression line? How do you find the best function that models: (-3, 14), (-2, 4), (-1, -2), (0, -4), (1, -2)? If the same amount is added to one dimensions and removed from the other, the resulting... A child care center has 440 feet of fencing to enclose two adjacent rectangular safe play areas.... How do you write the quadratic equation of the graph with the given points (-3, 4), (1,0), and (-1,-2)? A painter is making a rectangular canvas for her next painting. She wants the legnth of the... Is #f(x)= 3x^2# an exponential function? See all questions in Linear, Exponential, and Quadratic Models Impact of this question 9409 views around the world You can reuse this answer Creative Commons License