Esther and Amber are running 4 laps around the 400-meter track during their P. E. class. Esther runs at an average rate of 3 meters per second and Amber runs at an average rate of 2.5 meters per second, so Esther gives Amber a 100-meter head start. How many seconds will Esther need to run to catch up to Amber?

explanation:

the silver bells of the sleds are merry and keep time in the winter nights while the sky twinkles happily. the golden bells of weddings are delightful in their peaceful happiness, foretelling a rapturous future. meanwhile, the brazen alarm bells scream frightfully in the night, with a discordant and desperate sound. in their clamor, these bells convey terror, horror, and anger. finally, the iron bells are solemn and melancholy, while those in the church steeple are like ghouls who feel happiness. the king of the ghouls, who rings the bells, cheerfully keeps time with the moaning and groaning bells.

correct!

hope this !

~coco

the answer is b. the tracer looks harmless in flight, but the pilot’s bitten lips and white knuckles suggest how dangerous it can be.