a. Write an equation to show the sale price s of any item given its regular price \( r \). \[ \zeta=r-0.10 r \rightarrow s=0.90 p \] b. Does your equation represent a proportional relationship? Explain.
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We need to write an equation for the sale price \( s \) of an item given its regular price \( r \) with a 10% discount. Show more…
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