A pet food store offers a 15% discount to customers who are referred by a local vet's office. What is the discounted price of a $12 bottle of dog vitamins A.$10.20
B.$10.56
C.$11.85
D.$13.20

I'm so close to finishing all these.

Students are given 3 minutes for each multiple-choice question and 5 minutes for each free-response question on a test. there are 15 questions on the test, and students are given 51 minutes to take it.how many multiple-choice questions are on the test?

Eliza wants to make $10,000 from her investments. she finds an investment account that earns 4.5% interest. she decides to deposit $2,500 into an account. how much money will be in her account after 14 years?