Plz help I will give Brainleist! Use the substitution method for solve for x and y.

y = 2x + 10
y = -4x - 2

Which pair of lines is parallel? a. y=4x+1 and y+4=5 b. y=-2+x and 2y-2x=-2 c. y=1/4x + 2 and y-2=1/2x d. y=1/5x+1 and 5y+x= 10

Find the quotient. 50a2 – 98b2 -5a +7b

Astick 2 m long is placed vertically at point b. the top of the stick is in line with the top of a tree as seen from point a, which is 3 m from the stick and 30 m from the tree. how tall is the tree?