Answer:
B
Step-by-step explanation:
We have
[tex] - 4 \sin(7t + 3) [/tex]
Here the value of a is always positive because distance is positive
[tex] | - 4| = 4[/tex]
Next, we factor out 7 to get our period
[tex] - 4 \sin(7(t + \frac{3}{7} ) )[/tex]
So our period is
[tex] \frac{2\pi}{7} [/tex]
Next, our phase shift we set the inner parenthesis equal to 0.
[tex]t + \frac{3}{7} = 0[/tex]
[tex]t = - \frac{3}{7} [/tex]
So our phase shift is -3/7
