Use linear equation to solve this.
2x - 3y = 13
x + 2y = -4

Two parallel lines are crossed by a transversal. what is the value of x? x = 40 x = 70 x = 110 x = 130

Use the method of cylindrical shells to find the volume v generated by rotating the region bounded by the curves about the given axis.y = 7ex, y = 7e^-x, x = 1; about the y-axis

Which two undefined geometric terms always describe figures with no beginning or end?