3-i
4+2i
i don't understand what i need to do here

Graph y ≥ -x^2 - 1. click on the graph until the correct graph appears.

Apatient is to be given 35 milligrams of demerol every 4 hours. you have demerol 50 milligrams/milliliter in stock. how many milliliters should be given per dose?

What is the sum of these mixed numbers 4 2/3+ 3 1/9