Find each key feature of the function shown in the graph. Enter all intervals using interval notation. Enter the x-intercepts as a coordinate pair.

Range =
Domain =
x-intercept(s) =
Average rate of change over the interval [0, 1]=
The interval(s) where the function is positive=

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step-by-step explanation:

, 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

this answer is !

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step-by-step explanation: