Whats 9-3 i need help

The number of potato chips in a bag is normally distributed with a mean of 71 and a standard deviation of 2. approximately what percent of bags contain between 69 and 73 potato chips? approximately 68% approximately 71% approximately 95% approximately 99.7%

Simply 8x squared + 5(7x squared- x) - 2x =

What other information do you need to prove triangle dac=bca by asa