Sierra's ice-cream shop made $45 before she had to close early when the power went out. She realized she lost 2/3 of a dollar each hour when she was closed. If the expression that models this situation is 45 - 2/3 h, what was Sierra's profit if the shop was closed for 6 hours?

If Sierra's ice-cream shop was closed for 6 hours, her profit will be $41.

First, the question gives you the equation 45 - 2/3h, and h mean the number of hour (s), the question is:

what was Sierra's profit if the shop was closed for 6 hours?

So you can plug 6 into the equation,

45 - 2/3 (6), - 2/3 * 6 = - 4

45 - 4 = 41

The answer is $41