Evaluate 6x - 2y, for x = 0.8 and y = 1.5

Rationale

Evaluating 6x - 2y with x = 0.8 and y = 1.5 results in 1.8.

Substituting the given values into the expression yields: 6(0.8) - 2(1.5) = 4.8 - 3 = 1.8, confirming the correct answer.

A (2.3) YOUR ANSWER

This choice results from an incorrect calculation of the expression. It may arise from miscalculating either the multiplication or the subtraction, leading to an overestimation of the final value.

B (2) YOUR ANSWER

This value suggests a miscalculation, possibly from rounding or incorrectly substituting the values of x or y into the expression. It does not accurately reflect the result of the calculation.

C (1.8) CORRECT

This is the correct answer, derived from substituting the values of x and y into the expression 6x - 2y correctly. The calculation shows that 6(0.8) equals 4.8 and 2(1.5) equals 3, leading to the result of 1.8 after subtraction.

D (1.3) YOUR ANSWER

This option indicates a miscalculation, potentially from subtracting the values incorrectly or using incorrect multipliers for x and y. The final result does not align with the calculated output from the expression given.

E (None of the above) YOUR ANSWER

This choice implies that all provided options are incorrect. However, since 1.8 is a valid result of the calculation, this option is not applicable.

Conclusion

The evaluation of the expression 6x - 2y with the given values of x and y leads to a definitive result of 1.8. Among the provided choices, only option C accurately represents the correct calculation, while the others stem from computational errors or misinterpretations of the problem.

Evaluate 6x - 2y, for x = 0.8 and y = 1.5

Evaluating 6x - 2y with x = 0.8 and y = 1.5 results in 1.8.

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