A travel agent studies examples of one-way airfares between cities across the United States. To predict any airfare, she proposes the formula A = 150 + 0.2x, in which A is the airfare in dollars and x is the distance of the flight in miles. Based on the formula, what is the difference in airfare between a flight of k miles and a flight of k + 1 miles?

kmiles and a flight ofk + 1miles is0.2.A = 150 + 0.2xdifferenceinairfarebetween a flight of k miles and a flight of k + 1 miles?## What does the graph of the equation A = 150 + 0.2x represents ?

straight linewith slopem = 0.2.A(K)= 150 + 0.2K (Eqn. 1)A(K + 1)= 150 + 0.2(K + 1) = 150 + 0.2K + 0.2 = (150 + 0.2K) + 0.2A(K + 1) – A(K) = 0.2differenceinairfarebetween a flight of k miles and a flight of k + 1 miles is0.2.linear equations, visit the link below –