Fiona has proved that a function, f(x), is an arithmetic sequence. how did she prove that?

she showed that an explicit formula could be created.

she showed that a recursive formula could be created.

she showed that f(n) ÷ f(n - 1) was a constant ratio.

she showed that f(n) - f(n - 1) was a constant difference.

What is the exact volume of the cylinder (radius 13 in., height 30 in.)

Adecibel is a logarithmic unit that can be used to measure the intensity of a sound. the function y = 10logx gives the intensity of a sound in decibels, where x is the ratio of the intensity of the sound to a reference intensity. the reference intensity is generally set at the threshold of hearing. use the graphing utility to graph the decibel function.a whisper has a sound intensity of 30 decibels. use your graph to you complete the following statement. the sound intensity of a whisper is times the reference intensity.

In the diagram, ab is tangent to c, ab = 4 inches, and ad = 2 inches. find the radius of the circle.