Given a term in an arithmetic sequence and the common difference, find the first five terms 1) a17 = 71, d = 6

I need the answer fast and if you can, please explain.

An animal shelter has 21 puppies. if the puppies are 28% of the total dog and cat population , how many dogs and cats are in the animal shelter

The amount of money, in dollars, in an account after t years is given by a = 1000(1.03)^t. the initial deposit into the account was $_^a0 and the interest rate was _a1% per year. only enter numbers in the boxes. do not include any commas or decimal points^t. the initial deposit into the account was $__^a0 and the interest rate is % per year.

Simplify a7/a4 a) 1/a3 b)-a/a2 c)a4/a3 d)a3