What is the expanded form of the decimal 7664.23? a) (7 x 100) + (6 x 10) + (6 x 1) + (4 x 1 10 ) eliminate b) (7 x 100) + (6 x 10) + (6 x 1) + (2 x 1 10 ) + (3 x 1 100 ) c) (7 x 1000) + (6 x 100) + (4 x 1) + (2 x 1 100 ) + (3 x 1 1000 ) d) (7 x 1000) + (6 x 100) + (6 x 10) + (4 x 1) + (2 x 1 10 ) + (3 x 1 100 )