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The equation d = 22.5n + 27.5 represents the amount of money, in dollars, that Kathryn earns for each sale she makes. The variable n represents the number of items sold, and the variable d represents the total amount of money earned.



What is the number of items Kathryn must sell in order to earn $500?

Respuesta :

Coquivg15

Answer:

i think its 21

Step-by-step explanation:

22.5 x 21=472.5 then u have to add 27.5 so 472.5 + 27.5=500

felixkings

Answer:

[tex]\underline{ \boxed{Kathryn \: must \: sell \: \underline{ \boxed{21 \: items}} }}\\ \underline{ \boxed{ in \: order \: to \: earn \: \$500}}[/tex]

Step-by-step explanation:

[tex]if \: the \: amount \: of \: money = 22.5n + 27.5 \\ then \to \\ 500 = 22.5n + 27.5 \\ in \: oder \: to \: find \: number \: of \: items \: Kathryn \: must \: sell \\ \: in \: order \: to \: earn \: \$500 : \: we \: solve \: for \: \boxed{n} : \to \\ 500 = 22.5n + 27.5 \\ 22.5n = 500 - 27.5 \\ 22.5n = 472.5 \\ n = \frac{472.5}{22.5} = 21 \\ \underline{ \boxed{n = 21}}[/tex]

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