Evaluating 5x for x = 6.15. Do I multiply or divide?

[pattyrick10]

I have a question. If the directions say to evaluate 5x for each value of x, and the number is 6.15, would you multiply or divide the numbers

 

[Denis]

Not sure what you're asking;

anyway, 5x means 5 times x

 

[jwpaine]

5x = 6.15

x = 6.15/5

 

[stapel]

5x = 6.15

x = 6.15/5

The original poster said that the exercise was to "evaluate 5x at x = 6.15". Where is the equation, "5x = 6.15", coming from...? :shock:

Eliz.

 

[Loren]

If the directions say to evaluate 5x for each value of x, and the number is 6.15, would you multiply or divide the numbers?

Not sure what "the number is 6.15 means. If you mean that the variable x takes on a value of 6.15, then simply replace x by 6.15 in the expression 5x and evaluate that. And, again, 5x means 5 times x.

 

[jwpaine]

5x = 6.15

x = 6.15/5

The original poster said that the exercise was to "evaluate 5x at x = 6.15". Where is the equation, "5x = 6.15", coming from...? :shock:

Eliz.

Good question! My fault for not giving the question much thought!

x = 6.15, 5x = 5(6.15)