Answered

At Westonci.ca, we make it easy for you to get the answers you need from a community of knowledgeable individuals. Join our platform to connect with experts ready to provide accurate answers to your questions in various fields. Get quick and reliable solutions to your questions from a community of experienced experts on our platform.

Lea buys 20 picture frames. Some are 4 in. by 6 in. frames which cost $5.80 each, and the rest are 5 in. by 7 in. frames that cost $9.60 each. She spends a total of $80.80.

Which equation models this situation?

Let f represent the number of 4 in. by 6 in. frames she buys.

A.
9.6f + 5.8(20) = 80.8

B.
5.8f + 9.6(20 – f) = 80.8

C.
(5.8 + 9.6)(20 – f) = 80.8

D.
9.6f + 5.8(f + 20) = 80.8


Sagot :

To find the answer we have to slowly analyze the command.
 For surely on the one side we want to have total cash spent, so 80.8$
We know that there are 2 types of frames 5,80$ and 9.60$.
We know too, that f is the number of frames 5.80$ bought.
Simply, to find the cash spent on those frames we have to just mulitply 5.80$ times f, so we obtain [tex]f*5.8[/tex].
We can say that number of bigger frames is 20-f.
So to find cash spent on bigger frames we have to multiply 9.60$ times (20-f), so
[tex]9.60*(20-f)[/tex]
Now we can just add cost of all frames together
[tex]f*5.80+9.60(20-f)[/tex]
And we know that is equal to 80.8, so
[tex]f*5.80+9.60(20-f)[/tex]=80.8

As we can see, the answer is b.
We hope you found this helpful. Feel free to come back anytime for more accurate answers and updated information. Your visit means a lot to us. Don't hesitate to return for more reliable answers to any questions you may have. Thank you for using Westonci.ca. Come back for more in-depth answers to all your queries.