
Kenneth S. answered 01/25/18
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Expert Help in Algebra/Trig/(Pre)calculus to Guarantee Success in 2018
Sorry, what you have written is not clear.
It appears, possibly, that x is used as a variable in the first instance but as a multiplication symbol in the second instance (otherwise the 30 tacked on at the end is mysterious).
I suggest that you revise (edit) and resulbmit.