Answer:
$110.
Step-by-step explanation:
Let x be the cost of item that Carmen purchased from departmental store.
We are told that Carmen has $30 in store bucks and a 25% discount coupon for a local department store. We are asked to find the cost of Carmen's purchase so that after her store bucks and discount are applied, her total is no more than $60 before sales tax.
As the $30 store bucks are applied before the 25% discount is applied, so we need to find x such that x-30 minus 25% of (x-30) should be less than or equal to 60. We can represent this information in an equation as:
Therefore, Carmen should make purchases at-most for $110 so that her total is no more than $60 before, sales tax.
Answer:
Kelvin wrote 60 the wrong way.
He has to write $30.65 - 60%, not 0.60.
Here is the final correct equation:
$30.65 - 60% = 12.26
Let x be the time it takes Elias and Niko to polish the silver working together. If Elias works alone, he could polish all the silver himself in 40 minutes. Then, in 1 minute, he will make 
of the total work. If the same analysis is applied Niko, in 1 minute, will make 
of the total work.
Working together Elias and Niko will need x minutes to make all the work. Then, in 1 minute, they will make 
of the total work. So, the fraction of the total work they make in 1 minute is given by this equation:
The shape of the graph is similar to the letter W; however, the region of interest will lie on the right of the origin, which means only the right half of the W(a negative number of cans cannot be produced). The profit produced will be maximized if the number of cans produced is greater than 3. The company will be at a loss if the number of cans produced is near 2.5. The break even situations are present if the company produces 2 or 3 cans.
