Suppose you bought supplies. three rolls of streamers and 15 party hats cost $30. later, you bought 2 rolls of streamers ad 4 party hats for $11. solve a system of equations to determine the cost of streamers and party hats, find their costs.

2x - 20 = 32 20 - 3x = 8 6x - 8 = 16 -13 - 3x = -10

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

What is the range of the relation in the table below? x y –2 0 –1 2 0 4 1 2 2 0