The growth rate is the a value, or the number before the x value. The answer would be 15.
Answer:
35
Step-by-step explanation:

Square root of 27.
3^(3/2) is the same as square root of 3 cubed, which is 27. so square root of 27.
When you have two unit prices for two comparable items, you have to convert one of the prices to the other one.