ASAP help - The water level in Ty’s swimming pool has a maximum depth of 4 feet. After a day of swimming with friends, the water level in the pool drops 6 inches. Which of the following could best be used to determine d, the depth of the water in feet, after Ty and his friends went swimming? *Show work*

He weights of 2-pound bags of best dog food are approximately normally distributed with a given mean  and standard deviation  according to the empirical rule, what percentage of the bags will have weights within 3 standard deviations of the mean? 47.5%68%95%99.7%

Suppose you are an avid reader and are looking to save money on the cost of books instead of paying about $20 for each book, you decide to look into purchasing a kindle for $120 you can purchase e-books for about $5 each 1. find the slope-intercept equation for the cost of the hard copy of books using x to represent the number of books 2. find the slope-intercept equation for the cost of the kindle with cost of e-books using x to represent the number of books

How do i i solve this equation? -18 = x/3 + 3