A study on the sales (Y=number of units sold) and the price (X, in pesos), the corresponding regression equation is Y=-1418X+2259 Which of the following is true? Select the correct response: as the sales increase by 1 unit, the price will decrease, on the average, by 1418 pesos. as the price increases by 1 peso, sales will increase, on the average, by 2259 units. as the price increases by 1 peso, the sales will decrease, on the average, by 1418 units.

I need help and answer key for 14 and 15

When taking a 27 question multiple choice test, where each question has five possible answers, it would be unusual to get  or more questions correct by guessing alone. Use the Range Rule of Thumb for Unusual Values to answer this question. Give your answer above as a whole number.

For this problem, assume the test had 6 true-false questions and 8 multiple-choice questions, and that each multiple-choice question had 5 choices. How many different answer sheets can be submitted?