Factor completely:
4a^2+8a-140

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

One positive number is 9 more than twice another. if their product is 95, find the numbers

Either enter an exact answer in terms of \piπ or use 3.143.14 for \piπ and enter your answer as a decimal.