Anewspaper sells both paper and digital subscriptions. the newspaper reports that 1,800 total subscriptions were sold last month and the total revenue from those subscription sales was $20,760. the digital subscriptions, d, cost $8 a month, and the paper subscriptions, p, cost $20 a month. which of the following systems of equations could be used to solve for the number of each type of subscription that was sold by the newspaper last month?

What is the explicit formula for this sequence? -7, -4, -1, 2, a.) an = 8 + (b - 1)3 b.) an = -7 + (n - 1)3 c.) an = 3 + (n -1) (-7) d.) an = -7 + (n - )

Can someone tell me if this is perpendicular? !

Astudy was interested in determining if eating milk chocolate lowered someone's cholesterol levels. ten people's cholesterol was measured. then, each of these individuals were told to eat 100g of milk chocolate every day and to eat as they normally did. after two weeks, their cholesterol levels were measured again. is there evidence to support that their cholesterol levels went down? how should we write the alternative hypothesis? (mud = the population mean difference= before - after)a. ha: mud = 0b. ha: mud > 0c. ha: mud < 0d. ha: mud does not equal 0