Please help I need 1, 2, 5, and 6!

Answers; a) 135 degree’s b) 30 degree’s c) 180 or 0 degree’s d) 90 degree’s

Li buys supplies so he can make and sell key chains. he begins to make a profit only after he sells 4 key chains. what point on the graph makes the most sense in this situation?

Solve this and show you’re work step by step ! -5 3/4+3h< 9 1/4 -