What are all the square numbers? I need help with my maths homework

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?

Which is greater, 7 p 5 or 7 c 5? 7p5 7c5

Does anyone know how to solve and graph this: 4 + | a + 2 | < 7the only part i don't get is the "4 +"