Answer:
12+# OR 12+x
Step-by-step explanation:
Increased by 12 means plus 12. The word "is" in equations is an equal sign. So far, you have 2n+12. On the other side of the equal sign, you have 31 less than 3 times a number.
Sqrt14 = 3.74 (2dp)
The principal root is always the positive.
A^2 - b^2 = (a+b)(a-b)
answer :
t^2 - 1
n^2 - 225
The answer is y= 3/4x - 4.