Andy is scuba diving. He starts at sea level and then descends 10 feet in 212 minutes. Part A
How would you represent Andy’s descent as a unit rate? Express your answer as an integer.
Enter your answer in the box.

Part B
If he continues at this rate, where will Andy be in relation to sea level after 6 minutes?

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