(2,-5) after a rotation of 90 degrees counterclockwise

Me : julio wears a blue shirt every 3 days. larry wears a blue shirt every 4 days. on april 11, both julio and larry wore a blue shirt. what is the next date that they will both wear a blue shirt?

The difference between the measures of two complementary angles is 14. find the measure of both angles.

What's the elapsed time between 2: 16 am and 8: 10 pm