Question

Which of the following is true for f(x) = 5cos(x) +1?

Answer 1

Answer:

The range of the function is the set of real numbers $-4\leq y\leq6$

Step-by-step explanation:

Since the amplitude is 5, this tells us the distance between the midline and the maximum/minimum, where the function oscillates. Here, the minimum is 1-5 = -4 and the maximum is 1+5 = 6. So, the last choice is correct