Can you please. help me. You don't have to do all the questions just 1, 3, 7. but if you do thank you. this is worth 100 so please do any many as you want but the lowest you can do is three and those are 1, 3, 7. THANK YOU

With finding limits of multi variable !

The pair of coordinates that do not represent the point( 5,150’) is a. (5,-210) b. (5,210) c. (-5,330) d. (-5,-30)

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?