Any value that is set and cannot change is a variable.

a. true
b. false

B

Step-by-step explanation:

What is a variable?

In maths, variables are quantities that can change within the context of the problem given. Typically we use letters such as "x", "y", and "z" to denote variables. Greek letters are also used extensively to name variables, in higher maths.

What is a constant?

Simply, it is a fixed value. A number per say, such as "10", "123", or "2" etc.

It can't change. Holds its value.

From the 2 definitions above, we certainly can say that the answer to this problem is False.

Correct answer is B.

14.3

step-by-step explanation:

add all the numbers together.

9 + 12 + 15 + 16 + 17 + 17 = 86

now, divide 86 by how many numbers we have: 6.

86 / 6 = 14.3