I don't know how to solve for the measures of each angle but I can tell what type of angles each of these are. (a) obtuse angle, (b) not sure, (c) not sure, (d) The relationship between the angles BA and BE is that together they form a right angle. And #3, I cannot helps with. Very, sorry that I was not able to answer all of your question. Hope this helps!
Problem 4:
4a = -15
4b = -75
4c = 125
Problem 5:
5a = -5
5b = 95
5c = -19 
Step-by-step explanation:
<em> See attached for my work. </em>
For problem 4, we substitute the different values given for x and solve.
For problem 5, we set the function equal to the given values and solve.
Answer:
Cost of rug during sale = $140
Step-by-step explanation:
Given
Marked price of rug in a store = $200
The store is holding a sale and offering a flat 30% less on marked price on all items
This means the sale price of all items would decrease by 30%
We can calculate the discount offered by taking out percentage discount of the marked price.
Discount offered on rug = 30% of Marked price 
The discount is then subtracted from the marked price to get the price of rug during sale.
∴ Price of rug during sale = Marked price - Discount 
Step-by-step explanation:
/qiq-iorx-dxr
Meet
anyone come
215 DOLLARS
271/5 = 54.2 hours
How: 2/5 +2/5+3/5 times 5 (bc its 3 different dogs with different times for 5 days) +3 (for 3 dogs) times 4/5 (bc each dog take 4/5 of an hour each) + 1/5 (for the extra 1/5 of an hour pepper wanted to stay outside)
*Important: in the parentheses are the explanation of why I did each addition or multiplication