Question

Translate the following words into a mathematical expression. Please explain.

5 more than a number
3 less than a number
A number increased by a factor of 4
A number increased by 7
6 decreased by a number
A number multiplied by 2

Answer 1

Just think about each one:

5 more than a number => n + 5
3 less than a number => n - 3
A number increased by a factor of 4 => 4*n
A number increased by 7 => n + 7
6 decreased by a number => 6 - n
A number multiplied by 2 => 2*n

Answer 2

is that how I will write each answer?