Solve the system by substitution.
9x + 3y = -30
– 5x = y

What does it mean by solve the exponential equation for x?

The trapezoid is composed of a rectangle and two triangles. what is the area of the rectangle? what is the total area of the triangles? what is the area of the trapezoid? a) 48 cm2; 32 cm2; 80 cm 2 b) 48 cm2; 16 cm2; 64 cm 2 c) 128 cm2; 32 cm2; 160 cm 2 d) 128 cm2; 16 cm2; 144 cm 2

Point m is located at (-4, -6). what is located 4 units from point m? ( its on a coordinate plane by the way. )