A stereo is marked down $75. If this is a 15% decrease, find the sale price

The weights of players in a basketball league are distributed normally. the distance (d) of each player's weight (w) from the mean of 86 kilograms was computed as follows: d = |w - 86| if d is greater than 7 for approximately 5% of the players, what is the approximate standard deviation of the players' weights? a. 1.75 kilograms b. 3.5 kilograms c. 4.3 kilograms d. 7 kilograms

How do businesses a country's economy? a. by investing in goods and services b. by increasing the unemployment rate c. by making profits

How do you use the elimination method for this question? explain, because i really want to understand!