Y= 2x+4 How many solutions does this linear system have?
x + 2y = 8
O one solution: (8,0)
one solution: (0, 8)
no solution
O infinite number of solutions

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.

Using the quadratic formula find the zeros of the given polynomial -5x^2+3x-11

Two planes leave an airport at the same time, one flying east, the other flying west. the eastbound plane travels 20 mph slower. they are 1600 mi apart after 2 hr. find the speed of each plane.