What does a equal in 1/2(a-7)=33?

To find a, you need to isolate/get the variable "a" by itself in the equation:

   Multiply the inverse of 1/2, which is 2, to get rid of the fraction

a - 7 = 66      Add 7 on both sides to get "a" by itself

a - 7 + 7 = 66 + 7

a = 73

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step-by-step explanation:

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;