If train a leaves the station going 60 miles per hour and train b leaves one hour later going 85 miles per hour, how long will it take train b to catch up with train a?

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?

I’ve been trying all day to figure this puzzle out. i need the work for it aswell. it is a factoring polynomials tarsia. the image is below.

1/4x+5=3/4. i can't get access to the answer to this question! and, my request on "contact us" will not go