Answer:
c
Step-by-step explanation:
m<4 and m<3 is a straight angle. straight angles are equal to 180 degrees. the friend found m<3=40 and m<4 is equal to 140 degrees (im not good at explaining, sorry)
6...9...
480
1200 times 0.4 equals 480
3/4+2/3= 17/12