Which of the following is equivalent to (x + 4)(3x2+2x)? O A. (x+4)(3 x2)+(x+4)(2x) O B. (x+4)(2x)+(x+4)(3x) O c. (x+4)(2x)•(x + 4)(3x) O D. (x + 4)(3x?)•(x+4)(2x)
Aword processing program requires a 7- digit registration code made up of the digits 1,2,4,5,6,7 and 9 each number has to be used and no number can be used mor than once how many codes are possible