4x - 10y = 12
2 (2x - 5y) = 12
2x - 5y = 12 / 2
2x - 5y = 6
This is the real answer.
Now,
if you want to find "x", it will be,
2x - 5y = 6
2x = 6 + 5y
x = (6 + 5y) / 2
And,
if you want to find "y", it will be,
2x - 5y = 6
5y = 2x - 6
y = (2x - 6) / 5
The answer is A. Hope that helps
120, 25% is 30, 50% should be 60, 75% should be 90, and 100% should be 120
(-9,-2) (1,3)
slope = (3 - (-2) / (1 - (-9) = 5/10 = 1/2
y - y1 = m(x - x1)
slope(m) = 1/2
(1,3)...x1 = 1 and y1 = 3
sub
y - 3 = 1/2(x - 1)
y - 3 = 1/2x - 1/2
y = 1/2x - 1/2 + 3
y = 1/2x - 1/2 + 6/2
y = 1/2x + 5/2 <=== slope intercept form
The mean is 23.875. That would be roughly $24 each time