Answer: Expression used to find the total ribbon she used = x+11.2
Explanation:
Let the length of blue ribbon to use to make a bow for a dress be x
And
The length of brown ribbon is used to make a bow for a dress = 11.2 inches
Expression need to find the total ribbon she used will be sum of blue and brown ribbon altogether
i.e. x+11.2 inches
So, the required expression will be x+11.2 inches
10.5/7 is all you would need to do to find your answer of 1.5 yards of ribbon per bow.
The difference quotient of the function that has been presented to us will turn out to be 5.
<h3>How can I calculate the quotient of differences?</h3>
In this step, we wish to determine the difference quotient for the function that was supplied.
To begin, keep in mind that the difference quotient may be calculated by:
Lim h->0 
Now, for the purpose of the function, we need this:
Then we will have:

j(x) = 5x - 3
Then the following will be true:
Therefore, 5 is the value of the difference quotient for j(x) is %
Read the following if you are interested in finding out more about difference quotients:
brainly.com/question/15166834
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Answer:
x = 15°
Step-by-step explanation:
(5x-15) + 75 + 3x = 180
8x + 60 = 180
8x = 120
x = 15°