Represent the number 256 in both exponent and expanded form

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

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?

1) you deposit $2,500 in an account that earns 4% simple interest. how much do you earn in eight years?