Answer:D
Step-by-step explanation:
Assuming a fair die,
probability of winning 0.25 = (2/6) = 1/3
probability of losing 0.25 = (4/6) = 2/3
Expected win
= sum (proba.*winning)
=0.25*(1/3) + (-0.25)(2/3)
=-0.25/3
= - (1/12) dollars (negative sign means expecting to lose)
7(y+2)=3
seven times the sum of a number (y) and 2
means y+2 multiplying by 7
You need to find the prime factors of each term in order to find the greatest common factor.
The answer is 3.
