EXPERT HELP I'LL GIVE BRAINLIEST IF YOU EXPLAIN THE ANSWER

Suppose a pendulum is l meters long. the time, t,in seconds that it tales to swing back and forth once is given by t=2.01

Anyone? 15m is what percent of 60m; 3m; 30m; 1.5 km?

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.