a girl is at the top of a vertical cliff, at a point 120m above the ocean. she hammers a tennis ball up into the air. after 2.5 seconds, the ball reaches a maximum height of 145m above the ocean. when is the ball just 20m above the ocean?

Which graph represents an even function?

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?

Ithink i know it but i want to be sure so can you me out ?