The first four terms of a sequence are shown below: 7, 4, 1, −2

Which of the following functions best defines this sequence?

f(1) = 7, f(n + 1) = f(n) + 3; for n ≥ 1
f(1) = 7, f(n + 1) = f(n) − 3; for n ≥ 1
f(1) = 7, f(n + 1) = f(n) − 4; for n ≥ 1
f(1) = 7, f(n + 1) = f(n) + 4; for n ≥ 1

step-by-step explanation:

there is a formula i can give you:

it is r^2*n*sin(360/n) divided by 2 where r represents the "radius" and n is the number of sides.

plug them in:

(10sqrt(3))^2*6*sin(360/6) divided by 2

100*3*6*sin(60) divided by 2

900*sin(60)

900*sqrt(3)/2

450*sqrt(3)

approx is 779.4 cm^2

the answer is d

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