How to solve x values when the area under the normal distribution curve is known

What is the y-intercept of the line given by the equation

An airplane is flying at an elevation of 5150 ft, directly above a straight highway. two motorists are driving cars on the highway on opposite sides of the plane, and the angle of depression to one car is 35 ̊ and to the other is 52 ̊. how far apart are the cars?

Solve for the equation x. 2x + 22 = 4(x + 3)