Mastering Expression Translation

Translate the expression: "The sum of a number and 9."

Translate the expression: "The product of 5 and a number."

Translate the expression: "The difference between a number and 12."

Translate the expression: "The quotient of a number and 4."

Translate the expression: "Twice a number decreased by 3."

Translate the expression: "Three more than the product of 7 and a number."

Translate the expression: "Half of a number increased by 8."

Translate the expression: "The square of a number minus 5."

Translate the expression: "Four times a number plus 10."

Translate the expression: "The sum of twice a number and 15."