Answer:
Attached excel file containing formula for monthly cost of gas.
Explanation:
To find mileage note down readings at the star of month and at end of month.
Subtract end of month reading from start this will give you number of miles in month. Now as per mentioned in question, divide number of miles by average mpg and multiply by the price of a gallon of gas.
Here is your monthly cost of gas.
Answer:
C. sqrt(Math)
Explanation:
All but one of options A to E are is not a static method.
Only option C is a static method. The sqrt() is a static method of Math, that can always be used as Math.sqrt() is used;
The Math class defines all of its methods to be static. Invoking Math methods is done by using Math as a method rather than a variable of type Math; this means that sqrt(Math) doesn't rely on instance variables and don't need to be overridden, unlike others.
Lastly, sqrt(Math) is a static method because unlike other options, it is an utility method, and it is relevant to computations on primitive data types.
The purpose of the static method is in large part to offer a standard library of functions, and it doesn't need to be applied directly to an object.
Answer:
Authentication
Explanation:
Authentication allows for the verification of a message's origin, and integrity provides proof that a message's contents have not changed since it was sent. Additionally, non-repudiation ensures that a message sender cannot deny sending the message.
Answer:
API keys
Explanation:
API (Application Programming Interface) is a computing interface that defines the interaction between multiple software intermediaries.
API key is a specific identifier use authenticate the developer user and call programs for the API.
The API keys often serve as a specific identifier and a secret token for authentication, and usually have a set of access rights to the API associated with it.
These are commonly used to authenticate a project with an API instead of a human user. Different platforms can execute and use API keys in different ways.
