Estimate 65 root to the nearest tenth

Can someone me with this problem i don't understand i need

Witch represents the inverse of the function f(x)=1/4x-12

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?