Which word phrase represents the variable expression? 2n + 4
Atwice the sum of a number and 4
Bfour more than twice a number
Ctwice a number decreased by 4
Dtwo more than 4 times a number
Atwice the sum of a number and 4
Bfour more than twice a number
Ctwice a number decreased by 4
Dtwo more than 4 times a number