A and D
Explanation: I did this problem in khan academy
Answer:
x ≥ -1
Step-by-step explanation:
the red fully circle in -1 show that -1 is include
The doubling time of a population of flies is 4 hours. By what factor does the population increase in 24 hours
Answer:
blue
Step-by-step explanation:
a b c d e
1 2 3 4 5
27-25=2
so b, or blue
Answer: 54.4 mph
Step-by-step explanation:
First find the distance to the train station. If it took Carlos 4 hours to come back driving at 68 mph, the distance is:
= Speed * time
= 68 * 4
= 272 miles
This means that Carlos drove for 5 hours to cover 272 miles the first time. His average speed was therefore:
= Distance / time
= 272/5
= 54.4 mph
