Please help me with this question! Thank you in advance. -The submarine started at 275 feet below sea level

-After one hour, the submarine is 325.8 feet below sea level. How many feet did it dive?

-After two hours, the submarine dives another 23 feet deeper.

-On hour three, the submarine descended the average of dives from hour one and two.

-Fill in chart below using the information above. Sea level is considered 0 feet.

Step-by-step explanation:

1. if the sub is at 325.8 at it was originally at 275 you have to put the numbers in absolute value. so 325.8 - 275=50.8

the sub went down -50.8 feet to get to 325.8

if the diver dives another 23 feet you have to put the numbers in absolute value and add 325.8 + 23= -348.8 feet underwater

on hour 3 it says that it descends an average of how much he went down in the first 2 hours witch is -73.8

i got -73.8 by adding hours one and two

then you add hour 3 by -348.8  

step-by-step explanation:

if you want to solve percent error follow these steps.

1. subtract the accepted value from the experimental value.

2. take the absolute value of step 1.

3. divide that answer by the accepted value.

4. multiply that answer by 100 and add the % symbol to express the answer as a percentage.

if you want to solve percent of change just do this.

1. work out the difference (increase) between the two numbers you are comparing.

2. divide the increase by the original number and multiply the answer by 100. if your answer is a negative number then this is a percentage decrease.

hope this : )