Balcony and orchestra tickets were sold for a friday night concert last week. the balcony and orchestra tickets sold for $35 and $45, respectively. if 90 tickets were sold, and the total revenue was $3550 for the night, find the number of balcony and orchestra tickets sold.

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.

Use a transformation to solve the equation. w/4 = 8 can you also leave a detailed explanation on how this equation = 32

50 will mark show all use the linear combination method to solve the system of equations. explain each step of your solution. if steps are not explained, you will not receive credit for that step. 2x+9y= -26 -3x-7y=13