Please hurry I have a test. ILL GIVE YOU BRAINLIEST
Jay wrote an equation to determine the sales tax on an item he wanted to buy. The equation was y = 0.09 x, where y represents the amount of sales tax and x represents the cost of the item before tax is added. Which graph represents this information?

Standard deviation of 19,29,21,22,23

If f(x) and g(x) are inverse functions of each other, which of the following shows the graph of f(g(x)

The edge of a cube was found to be 30 cm with a possible error in measurement of 0.4 cm. use differentials to estimate the maximum possible error, relative error, and percentage error in computing the volume of the cube and the surface area of the cube. (round your answers to four decimal places.) (a) the volume of the cube maximum possible error cm3 relative error percentage error % (b) the surface area of the cube maximum possible error cm2 relative error percentage error %