414.335 because of a calculator
Try 6578 :) I think that may be right,
Answer:
f(2) = 15
for f(x) = 4, x = 6
Step-by-step explanation:
f(2) means f(x) for x = 2.
in the table for x = 2 we see f(x) = 15.
the second question : f(x) = 4
so, where in the table do we find f(x) = 4 ? ah, for x = 6 do we find f(x) = 4.
Answer:
Step-by-step explanation:
15, 30, 45, 60 ... (15 + (n - 1)*15 ) ...
n = 5
15 + (5 - 1)*15
15 + 4 * 15
15 + 60
75
n = 6
15 + (6 - 1)*15
15 + 5*15
15 + 75
90
n = 7
15 + (7 - 1)*15
15 + 6*15
15 + 90
105