Atheater can seat 550 people. the number of rows is 3 less than the number of seats in each row. how many rows of seats are there?

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

Witch represents the inverse of the function f(x)=1/4x-12

:24% of students in a class are girls. if there are less than 30 students in this class, how many students are there? how many girls are there?