So we want to know how much Orlando owes, here's the answer:
Since he pays 121$ every month, the formula would be this:

, if we consider x = months.
So the answer is B,
Hope this helped! c:
4x+11+7x-6+43= 180
11x = 132
x = 12
7(12)-6 = 78
RTS = 78 degrees
3,7 corresponding 2,7 exterior
4,5 & 3,6 interior
The circumference and
Abacus