First, we need to find out how much the price increased by.
$4.50 - $3.75 = $0.75
Now we have to figure out what percent $0.75 is of $3.75. To do this, we divide $0.75 by $3.75.
The answer is 0.2. Now, we convert this into a percent by moving the decimal to the right by to spaces: 0.2 = 20%
The percent of increase is 20%.
Answer:
The new store will have a profit of $5400 after its fifth month.
(R-C)(x) = (x²+5x+14)-(x²-4x+5) = x²-x²+5x--4x+14-5 = 5x+4x+14-5=9x+9
(Use 5 for x)
(R-C)(5) = 9(5) + 9 = 45+9 = 54
