Find the amplitude of y = -4 sin x.

The amplitude is 4.

Step-by-step explanation:

Given the form of the sine function:

Where is the amplitude, is the period and "k" is the vertical shift of the wave.

You know that, in the sine function given ( ), you can identify the amplitude and the period. These are:

Therefore, the amplitude of   is:

the final price would be 29.6925

step-by-step explanation:

39.59 minus 25% equals 29.6925