The area of the surface of a circular pond is needed. A measure about the pond gives a circumference of about 47 feet. Find the area. The area of the surface is about __ sq. ft. or ft.

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step-by-step explanation:

the answer is 31.27mph

, 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

d. you cannot tell because there are no values shown.