How to do this? (I posted this before but they only gave me the answer and the solution for the 1st and 2nd problem I need to know the third.)

What is the nth term rule of the linear sequence below? 27 , 25 , 23 , 21 , 19 , . .

1. if we have 3 babies what is the probability they’re going to be all boys? 2. if we roll 2 die at the same time what is the probability of getting less than 10 on the first roll and a 5 on the second roll 3. if we have 3 babies what is the probability their is going to be 2 girls? 4. if we have 3 babies what is the probability of having no more than 1 girl? 5. it we have 3 babies and then have another 3 babies what is the probability of us having at least 1 boy and then having all girls?

1.two more than the quotient of a number and 6 is equal to 7 use the c for the unknown number translate the sentence into an equation