Jimmy and Tony observed two points, P and Q, on a number line. A number line is shown from negative 1 to positive 1 with increme
nts of 1 over 8. The numbers negative 1, negative 6 over 8, negative 4 over 8, negative 2 over 8, 0, 2 over 8, 4 over 8, 6 over 8 are labeled on the number line. A point P is shown at the fifth tick mark to the left of 0, and a point Q is shown at the fifth place to the right of 0. Jimmy said that the absolute values of the numbers represented by the two points are the same. Tony said that the absolute values of the numbers represented by the two points are different. Which of the following explains who is correct?
The scuba diver must descend 3 feet in the fifth minute to meet the goal.
Why?
To find how many feet does the scuba diver need to descend to reach the goal of 35 feet in 5 minutes, we need to calculate how many feet he did descend on the first 4 minutes.
So, calculating we have:
Hence, we can see that at the 4 minute, he has only descended 32ft. It means that he need to descend 3 feet more in the fifth minute.