47. A new photocopier under heavy use will depreciate about 25% per year (meaning it holds 75% of its value each year). If the copier is purchased for $7000, how much is it worth 4 years later? How many years until its value is less than $1246?

Question content area Part 1 At low​ altitudes, the altitude of a skydiver and time in the air are linearly related. A skydiver jumps out of a​ low-flying plane. If the plane is 2000 feet above the ground and the jump lasts 85 ​seconds, how high above the ground was the skydiver 50 seconds after he​ jumped?   He would be enter your response here feet above the ground. ​(Round answer to nearest tenth of a​ foot.)

Parts a through d please, thank you!

one o Time Using Catalyst B (seconds) Time Using Catalyst A (seconds) 8. Trial 24 7 1 27 26 18 3 30 32 4 11 26 5 19 6. 32 22 7 19 30 8 26 23 9 22 10 19 16 11 20 13 12 25 26