1. how I can tell the difference in a word problem? Question number 2 explain how to solve the question over compound dependent events and explain how I got the answer?

Quick translate "x is 12 units from 20" into an equation. what are the values of x being described? if you can answer any of my other questions that'd be great too

Acar travels at an average speed of 56 miles per hour. how long does it take to travel 196 miles

A33 gram sample of a substance that's used to detect explosives has a k-value of 0.1473. n = noekt no = initial mass (at time t = 0) n = mass at time t k = a positive constant that depends on the substance itself and on the units used to measure time t = time, in days