Which sum or difference is modeled by the algebra
a. (x2 - 2x + 3) - (-x2 - 4x - 2) = 2x-1
b. (x2 - 2x - 3) + (x2 - 4x + 2) = 2x - 1
c. (x2 - 2x - 3) - (x2 + 4x + 2) = 2x-1
d. (x2 - 2x - 3) + (-12 + 4x + 2) = 2x-1

78.59 is the mean

step-by-step explanation:

answer: evaluate the objective function at each vertex to determine which - and -values, if any, maximize or minimize the function. example: find the minimum value and maximum value of the objective function f ( x , y ) = 4 x + 5 y , subject to the following constraints

x=-2

step-by-step explanation:

i began by flipping the problem to give me x= on the left (keeps it clearer for me).   so my problem simply became 10x-3=4x-6.  

1)   subtract 4x from the right side, which equals 0.   you do the same to the left of the equal as the right; therefore, subtract 4x from 10x, leaving 6x on the left.

              10x-3=4x-6   :   4x-4x on the right leaves only the -6        

2)             6x-3= 0-6 :    

                6x+3=   -6

3) divide