Answer:
66.475
Step-by-step explanation:
7.158 * 10^9 rounds to 7 * 10^9
7 * 10^9 = 7,000,000,000
Answer:
I came up with -12
Step-by-step explanation:
8 workers = 6 days to complete
x workers = 4 days faster to complete
6/4=1.5 days faster
1.5 x 8 = 12 workers needed to complete the wall in fours days
Answer B
Explanation: Y=mx+b
M=slope and b=yintercept