Which system of equations is equivalent to the following system? (5 points) 2x + 4y = 14 4x + y = 20 a.2x + 4y = 14
−16x − 4y = −80

b.2x + 4y = 14
−4x + y = −20

c.4x + 8y = −28
4x + y = 20

d.−2x − 4y = 14
4x + y = 20

One of the same side angles of two parallel lines is 20° smaller than the other one. find the measures of these two angles.

Anyone know? will mark brainliest if correct

Heather is writing a quadratic function that represents a parabola that touches but does not cross the x-axis at x = -6. which function could heather be writing? fx) = x2 + 36x + 12 = x2 - 36x - 12 f(x) = -x + 12x + 36 f(x) = -x? - 12x - 36