Asequence is defined recursively using the equation formula f(n+1) = -0.5 f(n). if the first term of the sequence is 120, what is f(5)?

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

y=3x+4

step-by-step explanation:

given the points a(0,4) and b(-4, -8)

eqn of line ab: (y-4)/(x-0)=(-8-4)/(-4-0)

(y-4)/x=-12/-4=3

y=3x+4