If DE= 4x+1, EB=12x-31, and CD=28 find DB. HELP I HAVE 20 MIN TO TURN IT IN

Can someone pls ! pls answer all. no explanation needed..

According to modern science, earth is about 4.5 billion years old and written human history extends back about 10,000 years. suppose the entire history of earth is represented with a 10-meter-long timeline, with the birth of earth on one end and today at the other end.

The weights of broilers (commercially raised chickens) are approximately normally distributed with mean 1387 grams and standard deviation 161 grams. what is the probability that a randomly selected broiler weighs more than 1,425 grams?