Which of the following is the simplified form ofthe seventh root of x times the seventh root of x times the seventh root of x? x to the 3 over seventh power
x to the 1 over seventh power
x to the 3 over 21st power
the 21st root of x

In the equations, a and b represent the price per night for a room in hotel a and hotel b, respectively, w weeks after september 1 last autumn. what was the price per night in hotel a when it was equal to the price per night in hotel b? a = 240 − 20w b = 320 − 30w

He weights of 2-pound bags of best dog food are approximately normally distributed with a given mean  and standard deviation  according to the empirical rule, what percentage of the bags will have weights within 3 standard deviations of the mean? 47.5%68%95%99.7%

Select all of the following expressions that are equal to 2.5.