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 situation is an example of an observational study

Uestion 1(multiple choice worth 5 points) (05.02)alex wants to paint one side of his skateboard ramp with glow-in-the-dark paint, but he needs to know how much area he is painting. calculate the area of the isosceles trapezoid. isosceles trapezoid with top base 12 feet, bottom base of 18 feet, and height of 6 feet. 72 ft2 84 ft2 90 ft2 108 ft2

Consider the following function. which of the following graphs corresponds to the given function? w. x. y. z. a. z b. y c. x d.