Hakim is saving money to buy a computer. Part A: Hakim invests $800 in a bank that pays 5% simple interest annually. How much money does he have after 1 full year in total? Show your work, or explain how you found your answer.
Part B: The original cost of the computer is $860.00. The computer is on sale for a 15% discount off of the original cost. The tax is 4% of the sale price. What is the final cost of the computer? Show your work.
Part C: Will Hakim have enough money in his bank account to buy the computer at its final price? How much more money does Hakim need or how much extra money does he have? Show your work.