A plane flew 30 miles north and then 40 miles east. How far is the plane from its starting point?

Find the zero function by factoring (try to show work) h(x)=-x^2-6x-9

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.

What are the domain and range of the function f(x)=2^x+1