Best buy is having 20 percent off deals on TVs. if the TV cost $415 in total, how much would you pay with the discount?

Aresearch company wants to test the claim that a new multivitamin to improve short term memory. state the objective of the experiment, suggest a population, determine the experimental and control groups, and describe a sample procedure.

Ineed someone to me answer my question i have to have this done and knocked out

Atorch and a battery cost 2.50 altogether. the torch costs 1.50 more than the battery. what fraction of the total price is the torch? give your answer in its simplest form.