Answer:
218
Step-by-step explanation:
Because we need f(n) to calculate f(n+1), we have to calculate our values one step at a time. Starting with f(1) = 1,
f(2) = 5(f(1)) + 3 = 5(1) + 3 = 5+3 = 8
f(3) = 5(8) + 3 = 40 + 3 = 43
f(4) = 5(43) + 3 = 215 + 3 = 218
(I'm going to use brackets as my absolute value bars lol)
[5 x -3]
[-15]
=15
Answer:

Step-by-step explanation:
Take a look at the attachment...
Hope this helps! :)
Acute angles because they are less then 90 degrees which is a right angle.