Solve for h. 12h = 180

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

Players on the school soccer team are selling candles to raise money for an upcoming trip. each player has 24 candles to sell. if a player sells 4 candles a profit of$30 is made. if he sells 12 candles a profit of $70 is made. determine an equation to model his situation?

Given the two similar triangles, how do i find the missing length? if a=4, b=5, and b'=7.5 find a'