Answer: <
Explantion:

, because you factor the 5 into 10 and 4 so

The second one you want will be integers.
It should be 20 I did it on my test
Not sure sorry but you can. Try searching on google or yahoo answers
Answer:
well x-(-18) x+18 but the if part is x<-18 will stay the same
Step-by-step explanation:
Answer:
a: 210 codes are possible.
b: 1/210 is the probability of entering the correct code.