Which of the following could be a rational number

Aquadratic function f(x) has a turning point at (3,-7). what is the turning point of -f(x)?

Rewrite the hyperbolic equation 4y^2 -9x^2 +54x-8y-113=0

Which of the expressions (on the photo document i inserted) together represent all solutions to the following equation? 8cos(12x)+4=-4 *the answer should be in degrees.* > i would like for someone to explain the process to find the solutions for this.