An anonymous survey of college students was taken to determine behaviors regarding alcohol, cigarettes, and illegal drugs. the results were as follows: 838 drank alcohol regularly, 656 smoked cigarettes, 191 used illegal drugs, 405 drank alcohol regularly and smoked cigarettes, 102 drank alcohol regularly and used illegal drugs, 107 smoked cigarettes and used illegal drugs, 83 engaged in all three behaviors, and 146 engaged in none of these behaviors

x + y = 90 5x – 10y = 90 90 – 10y = 5x 90 + 10y = 5x

step-by-step explanation:

last month maria hiked the 5-mile mountain trail a number of times and she hiked the 10-mile canal trail several times. let x represent the number of times she hiked the 5-mile trail, and let y represent the number of times she hiked the 10-mile trail. if she hiked a total of 90 miles, which equation can be used to find the number of times maria hiked each trail? x + y = 90 5x – 10y = 90 90 – 10y = 5x 90 + 10y = 5x

d will be the best answer