+129899
The first one is a little tricky....b is definitely = 0 ....there is no vertical shift of the second graph from the parent graph of sin x
Also.....the second function appears to be the normal sine graph shifted to the left by pi/2 rads...but, in fact, it is shifted to the right by 3pi/2 rads....so.....the shift right makes a < 0....and "A" is the correct answer
For....the second....this graph is symmetric with the y axis.....therefore....it is even ⇒ "F"
