20 Select the correct answer.
Which expression is a factor of this polynomial?
13 + 2.12 – 9r – 18
O A. (x – 6)
O B. (x - 2)
OC. (x + 1)
OD. (x + 2)

Solve for x -2.3(r - 1.2 ) = -9.66 enter you answer as decimal.

Shane can shovel the driveway in 4 hours, but if his sister it would take 2 hours. how long would it take taylor to shovel the driveway alone

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