Usually, dolores has to stock the shelves by herself and it takes her 7.2 hours. today camille dolores and they were able to finish the task in 2.8 hours. how long would it have taken camille if she were working alone?

Step-by-step explanation:

Let w be the work of stock the shelves and t be the time for Camille to the worl alone.

Dolores takes 7.2 hours.

If they combine work is completed in 2.8 hours.

          That is

   It takes 4.58 hours to stock the shelves if Camille were working alone

Step-by-step explanation:

38*x is not an equation, but rather an expression.  In words, it's "38 times the unknown number x."

If, on the other hand, you meant 38^x, that'd be "38 to the x-th power."

Make sure you've copied down the entire problem, using " ^ " for exponentiation where appropriate.