Ineed answers for number 17 18 20 and 21 need to have all this done when i leave for class at 11

With this one. will mark brainliest

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?

Which exponential function has an initial value of 2? f(x) = 2(3x) f(x) = 3(2x)