The masses of 4 samples of baking soda are measured to perform an experiment in science class.
T
2
5
2
4
3
NH
3
NP
4
What is the total number of grams of baking soda in all 4 samples?
grams

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