Single equation: if sin b = -12/13, π< -b< 3π/2 what is the answer for sin 2b or sin b/2

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%

On a piece of paper graft y+2> -3x-3 then determine which answer matches the graph you drew

What is the point of inflection for the function f(x)=2cos4x on the interval (0, pi/2)