Question

What are the amplitude, period, phase shift, and midline of f(x) = 7 cos(2x + π) − 3?

Amplitude = −3; period: π; phase shift: x = negative pi over 2; midline: y = 3

Amplitude: 7; period: π; phase shift: x = negative pi over 2; midline: y = −3

Amplitude: 7; period: 2π; phase shift: x = pi over 2; midline: y = 3

Amplitude: −3; period: 2π; phase shift: x = pi over 2; midline: y = −3

Answer 1

what is the range of cos?

Answer 2

idk this is all it gives me