How many solutions does this linear system have?
y = 2x – 5
-8x – 4y = -20
one solution: (-2.5, 0)
one solution: (2.5, 0)
no solution
infinite number of solutions

Roger and natalie travel in similar cars. roger's car drives the two miles to school in 7.5 minutes. natalie drives the same distance in the opposite direction but in only 6.5 minutes. what is true of their velocities?

Does anyone know how to do geometryme with this problem

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?