In a recent poll of 1100 randomly selected adults, a president's approval rating stood at 46%. a) make a 90% confidence interval for his approval rating by all adults in the country. b) based on the confidence interval, test the null hypothesis that 46% of the country approved of the way he was handling his job at that time.

Two variables, x and y, vary inversely, and x=12 when y=4. what is the value of y when x=3?

Amanda went into the grocery business starting with five stores. after one year, she opened two more stores. after two years, she opened two more stores than the previous year. if amanda expands her grocery business following the same pattern, which of the following graphs represents the number of stores she will own over time?

Aadc is formed by reflecting aabc across line segment ac, as shown in the figure. if the length of ac is 4 units, the area of aadc is square units.