**Answer:**

A variable is a quantity that may be changed according to the mathematical problem. The generic letters which are used in many algebraic expressions and equations are x, y, z. In other words, a variable is a symbol for a number where the value is not known. For example, x + 5 = 10. Here “x” is a variable.

**Explanation:**

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The solution is pretty simple. The answer is 77.8

**Answer:**

The answer is A. Cloud computing

**Explanation:**

Cloud computing is the process of using the internet to store, mange and process data rather than using a local server or a personal computer.

The term cloud computing is generally used to describe data centers available to many users over the Internet.

Therefore the company's approach to computing resources can be said to be **cloud computing ** because it uses the internet for data storage, data backup, and software development