Can two different angles have the same reference angle?

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

What values of x satisfy the inequality x^2-9x< 0? how is your answer shown on the graph?

Factor x2 – 8x + 15. which pair of numbers has a product of ac and a sum of what is the factored form of the