When the numbers have different signs:

Which of the fallowing best completes the sequence 12,8,5, a) 1 b) 2 c)4 d)0

What is the slope of the line that contains the points (4,8) and (9,8)? what type of line is it?

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