Answer:
I don't know bro actually which question ❓
Function y is a function of cosine transformed by some operations, so cos can take values from interval <-1;1>, which means that this function can take values from interval <-7;-1>. The minimum value is -7. The graph will be very helpuf in this task to understand.
60/5 is 12. So they are $12 each.
So what is $12*2=$24
