What isa cookoo bird clock thingie mabob

Solve the equation 3x2 + 19x + 9 = 0 to the nearest tenth.

Alake near the arctic circle is covered by a 222-meter-thick sheet of ice during the cold winter months. when spring arrives, the warm air gradually melts the ice, causing its thickness to decrease at a constant rate. after 333 weeks, the sheet is only 1.251.251, point, 25 meters thick. let s(t)s(t)s, left parenthesis, t, right parenthesis denote the ice sheet's thickness sss (measured in meters) as a function of time ttt (measured in weeks).

Apositive number a or the same number a increased by 50% and then decreased by 50% of the result?