Which expression is represented by the model below? K
-20
+
5
커
20
-15
-10
-5
0
10
1
15
A
B
3. (-5)
-5. (-3)
(-3) - 5
С
D
3.5

The sum of two numbers is 12 and their difference is 18 what are the two numbers

What is the 12th term of b(n)=-4-2(n-1)

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