if the measure of angle 3 is 2x+5 and the measure of angle 5 is 3x+7 what is the measure of angle 3?​

Taking algebra two apex courses and need with these questions

Which statement justifies why angle ebc measures 90?

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?