Which graph is likely to have a leading coefficient value of -1/8

Ben is three times as old as samantha, who is two years older than half of michel's age. if michel is 12. how old is ben?

Solve this system of equations. 12x − 18y = 27 4x − 6y = 10

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?