I am sorry you guys I am simply trying my best to do this Khan Academy, but I simply don't understand trig. How do I solve this? Thank you!

What is not true about kl and mn? what is mn? (show )

Jack did 3/5 of all problems on his weekend homework before sunday. on sunday he solved 1/3 of what was left and the last 4 problems. how many problems were assigned for the weekend?

Amanda went into the grocery business starting with five stores. after one year, she opened two more stores. after two years, she opened two more stores than the previous year. if amanda expands her grocery business following the same pattern, which of the following graphs represents the number of stores she will own over time?