Answer:
f(5) = 7.5
Step-by-step explanation:
given the recursive formula, then the next term in the sequence can be found from the previous term, that is
f(2) = - 0.5 × f(1) = - 0.5 × 120 = - 60
f(3) = - 0.5 × f(2) = - 0.5 × - 60 = 30
f(4) = - 0.5 × f(3) = - 0.5 × 30 = - 15
f(5) = - 0.5 × f(4) = - 0.5 × - 15 = 7.5
