It all depends in what there exponents are
Answer:
3x + 2
How I Found The Answer:
5x + 9 - 2x - 7
= 5x + 9 + -2 + -7
= (5x + -2x) + (9 + -7)
= 3x + 2
If you are looking to get it into standard form, you distribute the 5 to get 5a+10b
69.92 when you add them all up and divide it you get 69.92
we know that
The probability that "at least one" is the probability of exactly one, exactly 2, exactly 3, 4 and 5 contain salmonella.
The easiest way to solve this is to recognise that "at least one" is ALL 100% of the possibilities EXCEPT that none have salmonella.
If the probability that any one egg has 1/6 chance of salmonella
then
the probability that any one egg will not have salmonella = 5/6.
Therefore
for all 5 to not have salmonella
= (5/6)^5 = 3125 / 7776
= 0.401877 = 0.40 to 2 decimal places
REMEMBER this is the probability that NONE have salmonella
Therefore
the probability that at least one does = 1 - 0.40
= 0.60
the answer is
0.60 or 60%