If the pattern below follows the rule "Starting with five, every consecutive line has a number that is four less than twice the previous line," how many marbles must be in the sixth line? 3 O A. 36 O B. 20 O C. 68 O D. Need more information​

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

Solve x+3y=6 and 4x-6y=6 by elimination . show work !

Write the point-slope form of the line passing through (2, -12) and parallel to y=3x.