A) y=2x-4
b) y=2x+3
c) y= 1/2x+4
I'm terrible at algebra :((

Find the number of real number solutions for the equation. x2 + 5x + 7 = 0 0 cannot be determined 1 2

Solve this system of equations. 12x − 18y = 27 4x − 6y = 10

The length of a shadow of the building is 36m. the length of the pole, which is perpendicular to the ground, is 1.9m. the length of the pole's shadow is 1.52m. what is the height of the building?