What is the measure of angle EXF

Which of these is and example of a literal equation? a) 6+30=6^2 b)3x-4y c)12=9+3x d)ax-by=k

Solve the equation: x - 9 = -6 + 5 a. 21 b. 7 c. 14 d. 2

Tom travels between the two mile markers shown and then finds his average speed in miles per hour. select the three equations that represent this situation.