Lily built an orange shelf and a brown shelf to hang in her rom. the orange shelf is 5 feet 6 inches long. the brown shelf is twice as long. what is the length of the brown shelf?

Achemist has 200 ml of a 10% sucrose solution. she adds x ml of a 40% sucrose solution. the percent concentration, y, of the final mixture is given by the rational function: the chemist needs the concentration of the final mixture to be 30%. how many milliliters of the 40% solution should she add to the 10% solution to get this concentration?

Describe the domain and range of y=2(3)^x-2+5

What is the difference between the equations of a vertical and a horizontal line?