Answer:
+5
Explanation:
Let's analyze the sine function first:
![sin(x)](https://img.qammunity.org/2020/formulas/mathematics/middle-school/n5mqezkmhqgr7upo9pviprqqeh5ry21lc2.png)
we know that this is periodic function with values between -1 and 1.
Now let's consider the function of the problem
![y = -5sin(x)](https://img.qammunity.org/2020/formulas/mathematics/middle-school/dcrz6rwcmge5jfmpvn49hrtek49vq1k1hp.png)
Here we have basically multiplied the previous function by a constant number, -5. Therefore, we have:
- when
![sin(x)=1, y = -5 \cdot 1 = -5](https://img.qammunity.org/2020/formulas/mathematics/middle-school/ek12fcqsc65bwud2lhcqthvb2oxpklfu5x.png)
- when
![sin(x)=-1, y=-5 \cdot (-1)=+5](https://img.qammunity.org/2020/formulas/mathematics/middle-school/53xn8863ne282h38uyt3cgbpz3h3lvev9b.png)
So, the values of the function
![y = -5sin(x)](https://img.qammunity.org/2020/formulas/mathematics/middle-school/dcrz6rwcmge5jfmpvn49hrtek49vq1k1hp.png)
are between -5 and +5, and so its maximum value is +5.