The charge of the iron cation in FeS is:

The formula for magnesium phosphate is:

The formula for copper (I) sulfate:

Organisms that use CO2  as carbon source are called ________.

Use the graph to solve the problem.The graph shows the relationship between the area A of a rectangle and the length L, if the width is fixed. Find the area if the length is 19 cm.

Find the sum or difference. Write the answer in standard form.(8- 7i) – (-9- 7i) – (-6+ 4i)

Solve the equation.(9x + 6)2=16

Solve the equation.2×2=-12x -16

For the given functions f and g , find the indicated composition.f(x) =5x + 6,g(x) =5x – 1(f∘g)(x)

Solve the problem.A rock falls from a tower that is 320 feet high. As it is falling, its height is given by the formula  How many seconds (in tenths) will it take for the rock to hit the ground (h = 0)?