Project 5: Product Code

hey guys can someone help me with Project 5. I could not get the idea how to code the product for that.

Is it buzzer that you need help?
for changing frequency of buzzer
<button onclick="analogWrite(0,val);">tune</button>
where val varies from 0-255
replace val with the value.

@ashish7um In which task are you having problem please mention it.

I couldnt code for the project with the increasing output value

yes, thank you . I will try.