**Answer:**

**Step-by-step explanation:**

**Given**

**Required**

Determine the length of the aquarium

**The area of a rectangular base is calculated as:**

**Substitute values for Area and Width**

**Make Length the subject**

**Factorize the numerator**

Cost each book: C=?

C=(315-18)/9

C=(297)/9

C=33

Answer:

Each book cost 33

Point estimate is the method of looking for an approximate value of some parameter - example: the mean (average) and it could be also the sample standard deviation of a population from random samples of the population.

To get the point estimate: 20 (people wearing hearing aids) / 304 (total random sample) = 0.0657894 or 0.066

**Answer:**

**Step-by-step explanation:**

Answer:

Step-by-step explanation:

Example of banking