Using the following system of equations to help, what is the value of x-2y? 3x + 2y =48
2x +3y =12
Please help.

To complete your spring schedule, you must add calculus and physics. at 9: 30, there are three calculus sections and two physics sections; while at 11: 30, there are two calculus sections and three physics sections. how many ways can you complete your schedule if your only open periods are 9: 30 and 11: 30?

Given the function f(x) = log base 4(x+8) , find the value of f^-1(2)

Of four points are collinear, they are also coplanar