For every 3 children that purchased a 2016 year book there were 5 that did not. if there are 872 students how many would be expected not to have purchased a yearbook?

Which is an equation for the nth terms of the sequence 12,15,18,21

Complete the standard form of the equation that represents the quadratic relationship displayed above, where a, b, and c are rational numbers.

The function a represents the cost of manufacturing product a, in hundreds of dollars, and the function b represents the cost of manufacturing product b, in hundreds of dollars. a(t) = 5t + 2 b(t) = 7t - 2t +4 find the expression that describes the total cost of manufacturing both products, a(t) + b(t). a. 7t^2 - 7t + 2 b. 7t^2 + 3 +6 c. 7t^2 + 7t - 6 d. 7t^2 - 3t + 6