Nine to the yth power?​

Factor this polynomial completely x^2-64

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?

Two variables, x and y, vary inversely, and x=12 when y=4. what is the value of y when x=3?