42 =|7c| simplest form

Which equations represents circles that have a diameter of 12 units and a center that lies on the y-axis? check all that apply

Is the square root of 4 plus the square root of 16 rational?

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?