Need help with this one:)

Given f(t) = 282 - 53 +1, determine the function value f(2). do not include f(z) = in your answer

At a sale this week, a desk is being sold for $213. this is a 29% discount from the original price. what is the original price?

Apatient is to be given 35 milligrams of demerol every 4 hours. you have demerol 50 milligrams/milliliter in stock. how many milliliters should be given per dose?