State wheter each is a true statement, a fale statement, or an open sentence:
A: | the sum of 1 and 1 is the same as the product of 2 and 1 |
B: | the sum of the whole number x and 4 is 4 |
C: | the product of 80 and 1 is the same as the successor of 80 |
D: | if 8 is multiplied by 4, the result is the same as when 4 is multiplied by 8. |
E: | if 8 is divided by 4, the result is the same as when 4 is divided by 8. |
A: true; B: open (true for x=0 but false for any other whole number); C: false (80 does not equal 81);
D: true (32=32); E: false (the first result is 2 and the second is 0.5)