Each floor has r rooms. On 8 floors, there are a total of 256 rooms. Wrongs an equation to represent this situation

What is the solution to the inequality

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

Another type of subtraction equation is 16-b=7. explain how you would sole this equation then solve it.