Answer:
no,the pathway of the walker and cub don't intersect
Y(y+21) If you think about it you will see that it would most likely be this answer because the product of something is multiplying, and the sum is adding. If this answer is not correct then I am sorry.
The total amount of mixture would be 1 and 31\40.

therefore, the sum of this infinite geometric series can be calculated using the formula
.
So, 
If 2 is the sum of this infinite series, then you'll never reach it.
C. since:
coefficients: 18/-12 = -3/2
exponents of a: -2-(-4)=2
exponents of b: 5-(-6)=11