9 is the blank.
(a+b)^2 = a^2 + 2ab + b^2
a = x
b = 3
(x+3)^2 = x^2 + 6x + 9
The inequality represent the situtation is 10.5 + x < 33.
<h3>
What is inequlaity?</h3>
In Algebra, inequality is a Mathematical statement that shows the relation between two expressions using the inequality symbol.
Given
Samuel is running a 3-mile race.
He would like to finish the race in under 33 minutes.
He has already run for 10.5 minutes.
Let, x be the number of the minutes left for the race.
The inequality represent the situtation is;

Hence, the inequality represent the situtation is 10.5 + x < 33.
To know more about inequlaity click the link given below.
brainly.com/question/9404159
Step-by-step explanation:
For 1st question
the correct option is
a. 25
For second question
The correct option is
a. 81 / 4
Hope it will help :)
No it isn’t a function can I have brainliest
Answer:
x = -9
Step-by-step explanation:
-4x = -1/2(10x + 18)
Distribute
-4x= - 5x -9
Add 5x to each side
-4x+5x = -5x+5x -9
x = -9