Evaluate the following expression given the functions: f(4)=? g(x)= -3x+3, f(x)= x^2+16, and j(x)= 21/x

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

Ammonia molecules have three hydrogen atoms and one nitrogen atom.how many of each atom arein five molecules of ammonia

Water flows at a steady rate from a tap. its takes 40 seconds to fill a 4 litre watering can from the tap. the rate at which water flows from the tap is halved. complete: 4 litres into cm3