On friday the temperature was 82 f the temperature changed by -2 on saturday , and then it changed by 5 on sunday , what was the temperature on sunday , explain how the temperature changed using integers

An airplane is taking off headed due north with an air speed of 173 miles per hour at an angle of 18° relative to the horizontal. the wind is blowing with a velocity of 42 miles per hour at an angle of s47°e. find a vector that represents the resultant velocity of the plane relative to the point of takeoff. let i point east, j point north, and k point up.