Help with some math - TRIG

<p>I know this type of math isn't on the SAT, but I can't find help anywhere else for it. </p>

<p>What is the period of this trigonometric function: y = 4sin 0.5(x + pi/4)</p>

<p>BTW, the period equals 2pi/b (b = frequency)</p>

<p>the general equation of the sine function is</p>

<p>y = a sin (bx+c)</p>

<p>that should get you started</p>

<p>this isn’t a homew8rk, site, you can’t ask f8r help… :)</p>