Question

Which sequence is modeled by the graph below?

an = one half(16)n − 1

an = 4(2)n − 1

an = 16(−2)n − 1

an = 16(one half)n − 1

Answer 1

The Answer is D

Step-by-step explanation:

I took the test, and the formula for geometric explicit is An=A1 (R)^n-1

so it would make sense if it was D because a1 is the first number which would 16 because 8 x 2 = 16 since its the second term, its also being divided by half so the ratio is 1/2.