At noon, trevor and kim start running from the same point. trevor runs east at a speed of 5 mph and kim runs west at a speed of 3 mph. at what time will they be 12 miles apart?

Plz.yesterday, the snow was 2 feet deep in front of archie’s house. today, the snow depth dropped to 1.6 feet because the day is so warm. what is the percent change in the depth of the snow?

Katie wants to collect over 100 seashells. she already has 34 seashells in her collection. each day, she finds 12 more seashells on the beach. katie can use fractions of days to find seashells. write an inequality to determine the number of days, dd, it will take katie to collect over 100 seashells.

Ineed with question three. i don't understand how i'm supposed to achieve 3 marks.