Manuel paid off 88% of his debt. He originally owed $1950. How much does Manuel owe now?

Amerchant has coffee worth $60 a pound that she wishes to mix with 50 pounds of coffee worth $90 a pound to get a mixture that she will sell for $70 a pound. how many pounds of the & 60 coffee should be used?

Im literally having a mental breakdown

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