3 cm on the map represents 31.5 km in reality.
3cm : 31.5 km
1cm : 31.5/3 km
1cm : 10.5km
So the scale on the map is 1cm represents 10.5 km.
0, 12, 36, 108
just plug n (1,2,3,4) into the equation and that’s your answer.
The answer is A because if you do the 40 dagree and a coodinate plane it forms a triangle.
I am assuming this is a triangle.....P = a + b + c
P = 2a - 3 + 2a + 3a + 1....combine like terms
P = 7a - 2 <==