Does this matrix have an inverse? Why or why not?
A. Yes, because its determinant is zero.
B. Yes, because its determinant is greater than zero.
C. No, because its determinant is zero.
D. No, because its determinant is less than zero.

Solve the system of equations. y= 2x y= x^2 - 15

Plot the points (0,6), (3,15.8), and (9.5,0) using the graphing tool, and find the function

Add, subtract, multiply, or divide as indicated. list any restrictions for the variable(s) and simplify the answers when possible. 1) x-2 / x+5 + 3x / 2x-1 2) x+6 / x-6 - x^2 / x+6 3) x+9 / x-4 + x+2 / x^2-11x+28 4) x / x^2-64 + 11 / 2x^2+11x-40 5) 5 / x + 11 / x-3 - x-4 / x^2+2x-15