Which recursive formula describes the sequence 3,15, -75, -375 1875, ... where n represents the number of terms in the pattern and f(1) = 3? a. f(n) = 5f(n-1)
b. f(n) = -5f(n-1)
c. f(n) = (-1)^n *5f(n-1)
d. f(n) - (-1)^n-1 *5f(n-1)

The average daily maximum temperature for laura’s hometown can be modeled by the function f(x)=4.5sin(πx/6)+11.8 , where f(x) is the temperature in °c and x is the month. x = 0 corresponds to january. what is the average daily maximum temperature in may? round to the nearest tenth of a degree if needed. use 3.14 for π .