Can someone please help me with these

Let hh represent the number of hummingbirds and ss represent the number of sunbirds that must pollinate the colony so it can survive until next year. 6h+4s > 746h+4s> 74 this year, 88 hummingbirds pollinated the colony. what is the least number of sunbirds that must pollinate the colony to ensure that it will survive until next year?

What is the anwers for 9+2x=5x-3-x

Ab and bc form a right angle at point b. if a= (-3,-1) and b= (4,4) what is the equation of bc?