Question

write a function rule to represent the sequence
47,32,17,2

a. A(n)= 47 +(n - 1)15
b. A(n)= 47 +(n - 1)(-13)
c. A(n)= 47+(n - 1)(-15)
d. A(n)= 32 + (n - 1)15

Answer 1

Just substitute values of n into all of these functions. In this case, n=2 is sufficient to give you a correct answer.

For option a, A(2)=47+15=62, while 32 is expected, so it is incorrect. For option b, A(2)=47-13=35, so it is incorrect. For option d, A(n)=47, so it is incorrect.

Option c, however, gives A(2)=47-15=32, so it is valid. As we have proven that all of the other options are not valid, (c) is correct.

Answer 2

thanks!!!!!