Answer:
32*15 = 480
1500-480 = 1020
1020/10
102 races
Step-by-step explanation:
The mean of your question would be -2.5
Just replace a with 4 and b with 2 and your equation looks like
3.14 (4×2+4×2)
solve within the parenthesis first
3.14 (8+8)
3.14 (16) =50.24
