Which of the following is part of the solution to the trigonometric inequality sec(2x) < -1 over the interval 0 <= x <= 2pi radians? Edge 2020/21

I’m stuck on this equation, anyone got the answer?

Angles r and s are complementary. the measure of angle r is 31 degrees. which equation can be used to find angle s?

Yahir designs bracelets. he uses between 9 and 15 red and yellow beads in the ratio of 2 red bead to 5 yellow beads. drag the beads into the container to meet these requirements