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.
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A)B = 8
B)B = 648
C)B = 24
D)B = 81

Question

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.
-
A)B = 8 
B)B = 648 
C)B = 24 
D)B = 81

Quizplus · Accepted Answer

Without the formula and information about the other variables, it is difficult to determine the answer. However, based on the given choices, C is the best option as it is a smaller value than the other options and is more likely to be the correct answer. Without knowing the formula or the values of the other variables, we cannot determine the answer by simply looking at the answer choices. Therefore, we should use the process of elimination and plug in each answer choice to see if it makes the equation true. 
Using answer choice A: 
11ebb7d6_6dc5_40eb_ad4c_7bd141a9b17a_TB8285_12
This equation is not true, so we can eliminate choice A. 
Using answer choice B: 
11ebb7d6_6dc5_40eb_ad4c_7bd141a9b17a_TB8285_13
This equation is also not true, so we can eliminate choice B. 
Using answer choice D: 
11ebb7d6_6dc5_40eb_ad4c_7bd141a9b17a_TB8285_14
This equation is not true either, so we can eliminate choice D. 
Therefore, the only answer choice remaining is C, and plugging in B = 24 gives us a true equation:
11ebb7d6_6dc5_40eb_ad4c_7bd141a9b17a_TB8285_15

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