After plotting the data where x represents the length of the side of a polygon, and f(x) represents the area of the polygon, Jack used technology and constructed an appropriate model to approximate the area of the polygon. Use the model Jack created to predict the area of a polygon that has a side length of 3. f(x) = x2 + 3x + 1

a. 10
b. 18
c. 19
d. 20

Expresa commuter train leaves downtown sation and travels at a average speed of 55 miles per hour towards the north side sation, which is 50miles away. thirty minutes later, express commuter train #7 leaves north side and travels at a average speed of 35miles per hour towards downtown sation. at the moment the two trains pass each other, how far(in miles) is train #12 from the downtown sation and how long(in minutes) has the #12 train been traveling