Properties of multiplication 50b=10what is the answer?

One side of a rectangle is 7 feet shorter than seven times the other side. find the length of the shorter side if we also know that the perimeter of the rectangle is 306 feet.

Which inequality is equivalent to -3x < -12? x < 4 , x < -4 , x > 4, x > -4

Plzzz answer both questions and i will give you 100 points