Translating expressions and equations

What does 'difference' mean?

Translate the sentence into an equation: Four more than six times a number is 18.

Translate this phrase into an algebraic expression: 8 less than the product of 4 and a number (use m for the unknown number).

Translate the sentence into an equation: Seven subtracted from n is 18.

What is the coefficient in the expression: -12 + 6m?

What does 'product' mean?

Translate the sentence into an equation: The sum of a number and 9 is 25.

Translate this phrase into an algebraic expression: 3 times a number decreased by 5 (use n for the unknown number).

What is the constant in the expression: 7x + 3?

Translate the sentence into an equation: Twice a number is equal to 14.