D, one number is positive and the other is negative. The only way it could equal 0 is to cross the other out. An example is, -5+5=0
Think about it this way, what is 5x3??? 15 right. Ok then what is 5x30???? 150. So the store should sell each soccer ball for $5 each:)
10x + 35
If it is just the sum then it is this.
The probability of tossing a sum of 7:
6/36
the probability of tossing a sum greater than 7 :
not 100% sure
but I think it is 16/36
the probability of tossing a sum less than 13
36/36
good luck
