First, recall that the equation of a line is
y = mx+b
where
m = slope
b = y-int
The key to this question is the details :
Horizontal line ---> This tells you that your slope is 0
y-int = 3.5 -----> In the equation above, b=3.5
Therefore,
y = 0x + 3.5
y = 0 + 3.5
y = 3.5
To solve the problem we must know the Basic Rules of Exponentiation.
<h2>Basic Rules of Exponentiation</h2>
The solution of the expression is
.
<h2>Explanation</h2>
Given to us
Solution
We know that 16 can be reduced to
,

Using identity
,

Using identity
,
Solving further

Using identity
,


Hence, the solution of the expression is
.
Learn more about Exponentiation:
brainly.com/question/2193820
<h3>
Answer: y^4 - 2y^3 + 7y^2 + y - 5</h3>
Work Shown:
h(y) = f(y) + g(y)
h(y) = (y^4 - 3y^3 + y - 3) + (y^3 + 7y^2 - 2)
h(y) = y^4 - 3y^3 + y - 3 + y^3 + 7y^2 - 2
h(y) = y^4 + (-3y^3+y^3) + 7y^2 + y + (-3 - 2)
h(y) = y^4 - 2y^3 + 7y^2 + y - 5
This is a fourth degree polynomial (aka quartic).