Write the expression. Then, check all that apply. six times the sum of nine and a number Replace "a number with the variable, n The two operations are multiplication and addition The two operations are multiplication and subtraction Key Words Replace With six 6 The constants are 6 and 9 times The expression is written as 6n + 9 The expression is written as 6/9 + n) the sum of nine 9 a number​
