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A Formula Is Given, Along with Values for All but One

Question 103

Multiple Choice

A formula is given, along with values for all but one of the variables in the formula. Find the value of the variable that is not given. Round to the nearest hundredth when necessary.
-P = 2L + 2w; P = 20, L = 7


A) L = 3
B) w = 13
C) w = 27
D) w = 3

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