We will solve the problem for both cases:
Case 1:
If the amount increases by 7% we have the number for which we are going to multiply is given by:
Case 2:
If the amount decreases by 7% we have the number for which we are going to multiply is given by:
Answer:
single multiplier you would use for each case is:
x = 1.07 (increase)
x = 0.93 (decrease)
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.
Have a nice day!