The formula for calcium oxide is:

The formula for copper (I) sulfate:

Sodium nitrite is used to cure meats.  The formula for sodium nitrite is:

Organisms that use CO2  as carbon source are called ________.

Find the slope and the y-intercept of the line.7x + 9y =62

Solve and graph the inequality. Give answer in interval notation.10x – 18>2(4x – 7)

Solve the problem.In a milling operation, the thickness of the aluminium foil that can be produced satisfies the inequality  What range of thicknesses corresponds to this inequality?

Decide what values of the variable cannot possibly be solutions for the equation.+=11

Which one of the habitats below would have the most species diversity?  

A few birds, such as ostriches, have wings but cannot fly. What is the best explanation for this?