Solve each equation.

12 - b = 12.5

Isolate the variable by dividing each side by factors that don't contain the variable.

b  =  − 0.5

Step-by-step explanation:

I hope this helps!

choice b is correct

step-by-step explanation:

we have been given the following system of linear inequalities;

we are required to graphically determine the solution to these system of inequalities. using a graphing tool, the solution is as shown in the attachment below;