3a to the power of 2 plus 5a minus 2
Answer:

Step-by-step explanation:
Given,
Art electives = 3,
History electives = 4,
Computer electives = 5,
Total number of electives = 3 + 4 + 5 = 12,
Since, if a student chooses an art elective and a history elective,
So, the total combination of choosing an art elective and a history elective = 
Also, the total combination of choosing any 2 subjects out of 12 subjects = 
Hence, the probability that a student chooses an art elective and a history elective = 

Which is the required expression.
Answer:

Step-by-step explanation:
<em>Solve for </em>
<em> by simplifying both sides of the equation, then isolating the variable.</em>
Hope this helps :)
<em>-ilovejiminssi♡</em>
Answer:
(-4,0)
Step-by-step explanation:
We start at the origin (where the lines cross)
We will go left 4 units. That is the x coordinate (-4)
We go up 0. That is the y coordinate
(x,y)
C = (-4,0)
Answer:
-2
Step-by-step explanation:
all you gotta do is look to see where the line intersects the y axis which is -2 here