## anonymous one year ago A sequence is defined by the recursive formula f(n + 1) = 1.5f(n). Which sequence could be generated using the formula? –12, –18, –27, ... –20, 30, –45, ... –18, –16.5, –15, ... –16, –17.5, –19, ...

Take the first number in each sequence ($$f(1)$$) and multiply it by $$\dfrac{3}{2}$$. Does the next term ($$f(2)$$) match? For example, in the second sequence: $f(1)=-20\\ f(2)=\frac{3}{2}(-20)=-30\neq30$ That eliminates the second option.