1. Your utility company charges 10 cents per kilowatt hour of electricity. Compl

Question

1. Your utility company charges 10 cents per kilowatt hour of electricity. Complete parts (a) and (b) below a) What is the daily cost of keeping a 100-watt light bulb lit for S hours each day? Answer S.ox.I.50 b) How much will you save in a year if you replace the bulb with an LED that provides the same amo of light using only 26 watts of power? Round your answer to the nearest cent Answer 2. Assume that your steps are 21 inches apart when walking and that you take 8000 steps in a day. if this one signficant digit continues for a year, how far in miles will you have walked? Round your answer to Answer 3. Suppose that you have $500 and that you would like to deposit it into a savings account. You are with the following two options and need to decide which account to deposit your money into Account A: a simple interest account, with an annual interest of 4% Account B: a compound interest account; daly compounding with an APR of 3% Complete parts (a) and (b) below. a) If you plan to invest the $500 for five years, which account is the better option and what will the account balance be? Round your answer to the nearest cent. Answer: b) if you pla account balance be? n to invest the $500 for 25 years, which account is the better option and what will the Round your answer to the nearest cent. Answer: 4. If you can guess the whole number between 1 and 100, inclusive, that a computer program randomly picks, you will win $100; however, the participation fee is $10. What is the expected value of a single play? Answer

Explanation / Answer

1) Cost = 100/1000 kw * 5 hr * 10 cents/kw-hour = 5 cents

2) Savings/year = (5- 26/1000*5*10) * 365= 13.505 dollars.

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