Stranger's help( ◜‿◝ )

Solve the equation - 2(m -30) = -6m a-15 b-13 c-8 d8

For problems 29 - 31 the graph of a quadratic function y=ax^2 + bx + c is shown. tell whether the discriminant of ax^2 + bx + c = 0 is positive, negative, or zero.

An elevator travels 310 feet in 10 seconds. at that speed, how far can't his elevator travel in 12 seconds?