Answer: b) -5 ≤ y ≤ 1
Step-by-step explanation:
y = 3 cos (4x) - 2
↓ ↓
amplitude vertical shift
The amplitude is 3 which gives a range of -3 to 3 but there is also a shift down of 2 units so the new range is: -3 - 2 = -5 to 3 - 2 = 1
-5 ≤ y ≤ 1
