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.

Math i have no idea how to do a and b

Dylan is evaluation the expression 13+19+7+10 at one step in his work, dylan rewrites the equation as 13+7+19+10 which property of addition must dylan have used when he evaluated the expression?

Drag each tile to the correct box. not all tiles will be used. arrange the steps to solve the equation . simplify to obtain the final radical term on one side of the equation. raise both sides of the equation to the power of 2. apply the zero product rule. use the quadratic formula to find the values of x. simplify to get a quadratic equation. raise both sides of the equation to the power of 2 again.