Write the following using algebraic notation, using the letter x for any unknown numbers: I think of a number, subtract three then multiply by four

a) The  algebraic notation is     4 ( x -3 ) = 4x -3

b)  The algebraic notation is 2x +2

Step-by-step explanation:

Explanation:-

a)

Let 'x' be the number

Given 'x' is a number, subtract three

⇒ x - 3   and multiply '4'

The result of algebraic is     4 ( x -3 ) = 4x -3

b)

Let 'x' be a number and add one

⇒ (x+1) and then double

∴ The algebraic notation is

    (x+1 ) (2) = 2x +2

21

step-by-step explanation:

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