Answer:
15%
Step-by-step explanation:
The price of the tablet was increased from $180 to $207.
Increase = $207 - $180
= $27
Therefore,
Percentage increase = increase/initial amount x 100%
That’s $27/$180 x 100%
0.15 x 100
15%
The percentage increase was 15%
Answer:
10(x+9)
Step-by-step explanation:
For this case we have the following polynomial:

To solve the problem we apply the following steps:
1) We make a change of variables u = x ^ 2
2) We rewrite the polynomial
3) Solve the quadratic equation using the formula for the quadratic equation
4) We return the change and find four roots
Answer:
See attached image for procedure and solution
18 quarts of sparkling water