Solve the system of equations -6x-y=-16 and -6x-5y=-8 by combining equations

Pat listed all the numbers that have 15 as a multiple write the numbers in pats list

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

You can ride your bike around your block 6 times and the whole neighborhood 5 times in 16 minutes. you can ride your bike around your block 3 times and the whole neighborhood 10 times in 23 minutes. how long does it take you to ride around the neighborhood?