From a height of 256 feet above a lake on a cliff, Mikaela throws a rock out over the lake. The height of the rock + seconds after Mikaela throws it is represented by the equation H=-16t2 + 32+ + 256. To the nearest tenth
of a second, how long does it take the rock to reach the lake below? (Hint: replace h with 0)

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step-by-step explanation:

sorry no step by step

, and

for

step-by-step explanation:

we can analyze the pattern at which the terms increase. let us denote , , , so that we can call

note the following:

the pattern: to get the next term value, we just add the next term number (e.g. 1st, 2nd, to the previous term value (term values are the given numbers in the question, 1, 3, 6, 10, 15,

from , to get to , we add

from , to get to , we add

etc.

we need to form a recursive formula, a formula that has the next term as a function of the previous term. so a possible recursive formula can be

, and for

step-by-step explanation:

when the line is solid:

when the line is dashed:

this > inequality sign means:

this < inequality sign means:

this > inequality sign means:

this < inequality sign means:

about the problem:

srry i'm not done ! i'll