For a project in his Geometry class, Adriel uses a mirror on the ground to measure the height of his school's flagpole. He walks a distance of 6.25 meters from the
flagpole, then places a mirror on flat on the ground, marked with an X at the center.
He then steps 4.1 meters to the other side of the mirror, until he can see the top of the
flagpole clearly marked in the X. His partner measures the distance from his eyes to
the ground to be 1.55 meters. How tall is the flagpole? Round your answer to the
nearest hundredth of a meter.

, 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

a

step-by-step explanation:

answer:   c ?

step-by-step explanation: