Slope is -1/2 and y-intercept is -2

If a distance of 75 yds is measured back from the edge of the canyon and two angles are measured , find the distance across the canyon angle acb = 50° angle abc=100° a=75 yds what does c equal?

Find the solution to this system 2,1 1,-2 1,2 -1,2

If 5x - 2 = -12, then x = a) -50 b) -4.4 c) -2.8 d) -2