A researcher monitoring the power from the solar panels on a Mars lander has developed a linear model for the available power output in watts, P, against the number of days since landing, d, to help predict the change in power due to dust accumulation. The equation is P=215.4−0.422d. Interpret the P-intercept of the equation.

College Algebra
7th Edition
ISBN:9781305115545
Author:James Stewart, Lothar Redlin, Saleem Watson
Publisher:James Stewart, Lothar Redlin, Saleem Watson
Chapter1: Equations And Graphs
Section1.3: Lines
Problem 92E
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A researcher monitoring the power from the solar panels on a Mars lander has developed a linear model for the available power output in watts, P, against the number of days since landing, d, to help predict the change in power due to dust accumulation. The equation is P=215.4−0.422d. Interpret the P-intercept of the equation.

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