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Interpreting Linear Equation Parameters in Context
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PSAT Prep
034 Interpreting Linear Equation Parameters in Context
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A water softener has S pounds of salt left after n cycles, modeled by S = 0.04(500 - n). What does the slope mean?
A
Each cycle increases the amount of salt left by 0.04 pound.
B
The softener uses 500 pounds of salt each cycle.
C
Each cycle reduces the amount of salt left by 0.04 pound.
D
The softener starts with 0.04 pound of salt.
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