I need help with this...I'm so confused on #10. Can someone help me please???

The graph represents the gallons of water in a water tank with respect to the number of hours since it was completely filled

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?

Select the correct answer and solve for y