Find the next three terms in the geometric sequence: 72, 36, 18,... (sorry for bothering a lot)

Two cyclists 84 miles apart start riding toward each other at the samen time. one cycles 2 times as fast as the other. if they meet 4 hours later what is the speed (in miles) of the faster cyclists

Do you mind if you guys me with this question i’m on number 8

Jayne is studying urban planning and finds that her town is decreasing in population by 3% each year. the population of her town is changing by a constant rate. true or false?