sunshine1999
contestada

Karen buys a picture frame on sale for $9. A week later she buys the same frame for the regular price. The total price for the frames is $21.

Which equation could be used to find the cost (x) of the second frame? A) $21x = 9 B) $9x = $21 C) x + $9 = $21 D) x − $9 = $21 E) None of the above


What is the regular price of the frame?

A) $10 B) $12 C) $14 D) $16 E) None of the above

Respuesta :

mathecoach

Answer:

C) x + $9 = $21

B) $12

Answer:

Part (A): The correct option is C) x + $9 = $21

Part (B): The correct option is B) $12

Step-by-step explanation:

Consider the provided information.

Part (A)

Karen buys a picture frame on sale for $9.

A week later she buys the same frame for the regular price.

Let the regular price is x dollar.

The total price for the frames is $21.

Therefore the required equation is:

[tex]x+9=21[/tex]

Hence, the correct option is  C) x + $9 = $21

Part (B) Find the regular price.

Consider the equation [tex]x+9=21[/tex]

Solve the equation for x.

[tex]x+9-9=21-9[/tex]

[tex]x=12[/tex]

Hence, the regular price of the frame is $12.

Therefore, the correct option is B) $12

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