Two pools are being filled with water. To start, the first pool contains 776 liters of water and the second pool is empty. Water is being added to the first pool at a rate of 18.25 liters per minute. Water is being added to the second pool at a rate of 42.5 liters per minute.

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

If f(x) =3x-2 and g(x) =2x+1 fins (f+ g) (x)

Which ordered pair is a solution to the system of linear equations? 2x + 3y= 6 –3x + 5y = 10