Answer:
Step-by-step explanation:
(x+5)² = 36
x+ 5 = ±√36 = ±6
x = -5 ±6 = 1, -11
Answer:
= 

Step-by-step explanation:
let the number be x , then :
six added to twice the sum of a number and four means :

one half of the difference of three and the number means :


combining the two , we have
= 

Answer:
3
Step-by-step explanation:
First of all why is there 2 similar equation connected to one another?
Second in order to solve this all you need to do is plug in the number and solve for x
For 485
85x+60=485
85x=420
X=5
Do the same thing and you get 3
Answer:
Increase
Step-by-step explanation:
Since your not including the bad mark, it'd increase.