Answer:
Factoring the term
we get 
Step-by-step explanation:
We need to factor the term: 
Factoring:

Taking (y+4) common

It cannot be further factored.
So, Factoring the term
we get 
Translate story problems into equations. Solve equations. Translate story problems into inequalities.
I'm not going to do the entire question, but I'll do the first part.
For the first part, you have to set up an inequality. Use context clues, such as
no more than (the one used in this sentence) to figure out what the symbol should be for the inequality.
In this case, because it is NO MORE THAN 6400, it would be:
6400

250r + 475p
where r represents the # refrigerators, and p represents the # pianos
Now that you have the equation, make the graph, then for the 3rd part, plug in 12 and 8 to r and p to see if it keeps the inequality true.
Hope this helps! :)
Answer:
y= -5/6x-2/9
the / is a fraction
Step-by-step explanation:
#7 is the easiest one.
a + bi = -9 + 4i
see the expression on either side matches up so..
a = -9 and b = 4