PLS 40 POINTS The height (in feet) of an object launched into the air is given by the function h( t ) = − 5t *2 + 120t + 17 t is the time in seconds. a) When will the object reach its maximum height?

seconds

b) What will be the maximum height reached by the object?

feet

c) After how many seconds will the object hit the ground? Round your answer to the nearest tenth (one decimal place).

seconds

its b

Step-by-step explanation:

Answer is in the photo. I couldn't attach it here, but uploaded it to a file hosting. link below! Good Luck!

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i do not know the answer i am sorry

arithmetic sequence

step-by-step explanation:

given that a sequence has terms as

19, 15, 11,

this is represented on a graph

the pattern indicates that the sequence is an arithmetic sequence with i term

a=19 and common difference d =-4

any general term

thus the sequence is reduced by 4 for each successive term starting from 1 and nth term is

24-5n.

first negative term would start after 5th term

5th term =24-25< 0

from 5th term onwards the sequence would be negative.