If f(x) = x - 4, find f(10)

(a) calculate the molarity of a solution that contains 0.0345 mol nh4cl in 400 ml of solution. (b) how many moles of hno3 are present in 35.0 ml of a 2.20 m solution of nitric acid? (c) how many milliliters of 1.50 m koh solution are needed to supply 0.125 mil of koh ?

How do businesses a country's economy? a. by investing in goods and services b. by increasing the unemployment rate c. by making profits

If y varies directly as x2 and y=6 when x=6, find the constant of variation.