consider the counting number ending in write down the sequence what is its algebraic form what is the 30th term ​

Ineed i been stuck on this question since yesterday

You earn a 12% commission for every car you sell. how much is your commission if you sell a $23,000 car?

I'm at a bookstore with $\$35$ in my pocket and a $20\%$-off coupon. what is the cost of the most expensive book i can buy with my money and the coupon? (assume that there are books of every possible price in the bookstore. it's a large bookstore! )