Tara buys a tablet that costs only $320 because it is on sale for 20% off the original price. What is the original price of the tablet? (Use the variable P for "original price")

On a string instrument, the length of a string varies inversely as the frequency of its vibrations. an 11-inch string has a frequency of 400 cylces per second. find the frequency of a 10-icnch string.

1) you deposit $2,500 in an account that earns 4% simple interest. how much do you earn in eight years?

Bella want to know what the students at her school think of her show. which is the best group to survey to find this information a. go to the mall and ask all of the students she recognizes from school b. ask her viewers to call in durning an episode of the show c. get a list of students at her school from the office and use a random number generator to pick 30 of them d. get a list of students at her school from the office and pick the first 30 students on the list