Rick purchased several $15 picture frames
and received a 12% discount.

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

He mass of a single atom of carbon can be found by dividing the atomic mass (12.01 g) by 6.022 x 10^23. which is the mass of a single carbon atom, correctly written in scientific notation with the correct number of significant figures?

If a is a nonzero real number then the reciprocal of a is