A bricklayer is building a wall. Each layer of the wall has the same number of bricks.
The points on the following coordinate plane show how many bricks he used to make 2, 3, and 4 layers of the wall. How many bricks are used in 1 layer of the wall?

Which expressions are equivalent to -6 + 3m

If m 17 27 90 63 ** picture is attached

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