Let a and b be real numbers where a b0. Which of the following functions could represent the graph below?
f(x)= x(x - a)^3 (x - b) ^3
f(x)= (x - a) ^2 (x - b) ^4
f(x)= x(x - a) ^6 (x - b) ^2
f(x)= (x - a) ^5 (x - b)

Given that de, df, and ef are midsegments of △abc, and de=3.2 feet, ef=4 feet, and df=2.4 feet, the perimeter of △abc is .

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%

Every weekday, mr. jones bikes from his home to his job. sometimes he rides along two roads, the long route that is shown by the solid lines. other times, he takes the shortcut shown by the dashed line. how many fewer kilometers does mr. jones bike when he takes the shortcut instead of the long route?