Answer:
The value of function at x = 2 is 8.
Step-by-step explanation:
Given : Function 
We have to find the value of given function at x = 2 , that is f(2)
Consider the given function 
To find the value f(2) put x = 2 in given function ,
We have,

Simplify, we have,

Simplify further, we have,

Thus, the value of function at x = 2 is 8.
Answer:
The new width = 2 inches
Step-by-step explanation:
Original dimensions of the rectangular photo:
Length : width = 8 inches : 4 inches
Reduced dimensions of the rectangular photo:
Let
x = the new width
Length : width = 4 inches : x inches
Equate both dimensions to get the value of x
Length : width
8 inches : 4 inches = 4 inches : x inches
8 / 4 = 4 / x
Cross product
8 * x = 4 * 4
8x = 16
x = 16/8
x = 2 inches
The new width = 2 inches
4/3 because I typed in on my calculator
(12-7)+2(4+6) is the one thats value is 25