If two angles are complementary and one angle is xº what is the measure of the other angle?

Jordan rides his bike 6 7/15 miles every day to deliver newspapers and to go to and from school. if his ride to and from school is 4 3/10 miles, how many miles is the trip to deliver newspapers? 1 1/3 1 1/6 2 1/6 2 4/5

Ineed i been stuck on this question since yesterday

Which of the following is the best first step in solving the equation below? 4+2㏒³x=17