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 42-2/3h what was sierra’s profit if the shop was closed for 6 hours?

step-by-step explanation:

step 1: solve one of the equations for one of the variables. let's solve the first equation for y:

step 2: substitute that equation into the other equation, and solve for x.

step 3: substitute x = 4 x = 4 x=4 into one of the original equations, and solve for y.

or

step-by-step explanation:

we need to solve for 'x' the following equation:  

we have that:

⇒

⇒ ⇒

factorizing, we get that:

  ⇒

then, the solutions are: or

nothing extraneous has been found!