Answer:the answers is 88 1/2
Step-by-step explanation:
<em>The answer you are looking for is: </em>
<em><u>1.) c.) -4.9t^(2)+38t=0 </u></em>
<em><u>2.) 3 seconds </u></em>
<em>Hope that helps!! </em>
<em>Have a wonderful day!!!</em>
2.) 
--> 
So y = -4.
3.) 
Combine like terms:
--> 
Isolate x ---> 
----> 
So x = -2
4.) 
--> 
Combine like terms ---> 
This equation has many possible solutions.
5.) 
--> 
Combine like terms ---> 
----> 
-----> 
So x = -1.
6.) 
Distribute ---> 
This equation has many possible solutions.
The sum means that Eric is 3.3 m above sea level.
<h3>What is an addition expression?</h3>
This is a way of taking the sum of two or more expressions.
Given the following parameters
- The distance while descending = -13.7 meters
- The distance while ascending = +15.2 meters
An additional expression in the form of Descent + Ascent to represent this situation will be -13.7 + 15+ 2
<u>Calculate the sum:</u>
Sum = -13.7 + 15+ 2Sum = 3.3 meters
Hence the sum means that Eric is 3.3 m above sea level.
Learn more on sum here: brainly.com/question/24205483