Determine which of these illustrates two quantities that combine to make 0.
a)
latanya lost ten pounds and then gained six pounds.
b)
a business's profit if its income is more than its expenses.
c)
it is twenty degrees below zero and then the temperature rises ten degrees.
d)
marty gets ten dollars for his allowance and then spends ten dollars at the movies.

D)  Marty gets ten dollars for his allowance and then spends ten dollars at the movies.

Step-by-step explanation:

Getting ten dollars for allowance can be represented as +10.  Spending 10 dollars at the movies can be represented as -10.  Together, these give us

+10+(-10) = 0.

1.3

step-by-step explanation:

3x2=6   9x+6

bring down the 6 on both sides

6+6=12

12= 9x

divide by 9

12/9 =

1.3 =x