Ahome theater system is marked down from $3999 to $3180. what is the discount, and what is the rate of discount? (round to the nearest 0.1%)

Find the greatest common factor of -30x 4 yz 3 and 75x 4 z 2.

What’s -11-33k and factor each expression completely

In a survey of 1015 adults, a polling agency asked, "when you retire, do you think you will have enough money to live comfortably or not. of the 1015 surveyed, 534 stated that they were worried about having enough money to live comfortably in retirement. construct a 90% confidence interval for the proportion of adults who are worried about having enough money to live comfortably in retirement.