The answer is B, $10,000 is given and is not a variable that can be changed, since there are 150 band students raising money it would be 150x, and the 30,000 is the goal of the fundraiser
Sum means add, a number means x, and four means, uh, 4...
x+4. is what you're looking for
To find the y intercept, you cover x and it's coefficient and then divide -20 by 4 to get -5. To find the x intercept, you cover y and it's coefficient and divide 5 by -20 to get -4. So, x = -4 and y= -5
It's tedious to type out the formulas and it just looks messy. See the attached for an answer and explanation.
