Answer:
New depth = 1,107 feet
Step-by-step explanation:
1) Let us first calculate the total number of feet the submarine rose in 15 minutes using the rate of rise.
rate = 14.76 feet per minute
This means that at every minute, the submarine rose by 14.76 feet.
1 minute = 14.76 feet
∴ 15 minutes = 14.76 × 15 = 221.4 feet
2) To find the new depth, we will subtract the number of feet risen from the initial depth.
initial depth = 1,328.4 feet
rise after 15 minutes = 221.4 feet
New depth = 1,328.4 - 221.4 = 1,107 feet
