Answer:
20
Step-by-step explanation:
Let the number be X
400% of X = 80
400/100 × X = 80
4X = 80
X = 20
Answer: 20
f(4) = 49
f(-3) = -35
f(4) = 12(4) + 1 = 48 + 1 = 49
f(-3) = 12(-3) + 1 = -36 + 1 = -35
The answer is A: 12/4.
