Expand or factor each of the following expressions to determine which expressions are equivalent. (3.3 + 5)(31
4)
27.13 - 8
9.12 + 3.1 - 20
(4.1 – 3y)?
(3.1
2) (9x2 + 61 + 4)
(3.1 – 4y)?
9x2 - 245y + 16y2
(3x + 2)(9x2 - 6x + 4)

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

You give a $4 tip for a meal that cost $22. approximately what percent of the bill was your tip?

The lengths of all sides of a triangle are integers when measured in decimeters. one of the sides has length of 1 dm and another of 3 dm. find the perimeter of the triangle.'