Question

Which represents the geometric sequence an 12 - 31-1 in function form? Tere! a. f() = }(4)* b. f(x) = (3)* c. f(x) = 4(3) d. f(x) = 36(3)*

Answer 1

we have the geometric sequence

$a_n=12\cdot(3)^{(n-1)}$

that means

For n=1

an=12

For n=0

an=4

therefore

the function must to be

f(x)=4 (3^x)

because

For x=0 ------> f(x)=4

For x=1 ------> f(x)=12

answer is the option C