Which of the following is equivalent to the equation below ^15/2^3 please help I just want to graduate-

Write a corresponding real world problem to represent 2x - 125=400

Which inequality comparing two of the expressions is true when 0.7 < x < 0.9

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