Dan had twice as many coins as Eli.
Carol had twice as many coins as Dan.
Write down the ratio of the number of coins Carol had to the
number of coins Eli had.
Give your answer in its simplest form.

Acomputer store bought a program at a cost of $10 and sold it for $13. find the percent markup

Solve 3x-18=2y and 5x-6y=6 by elimination show work

The cross-sectional areas of a right triangular prism and a right cylinder are congruent. the right triangular prism has a height of 6 units, and the right cylinder has a height of 6 units. which conclusion can be made from the given information? the volume of the triangular prism is half the volume of the cylinder. the volume of the triangular prism is twice the volume of the cylinder. the volume of the triangular prism is equal to the volume of the cylinder. the volume of the triangular prism is not equal to the volume of the cylinder.