Question

I need the answer pls

Answer 1

A

Explanation:

To rite the equation of the function, take two points from the table. Let them be (1,21) and (3,15).

The slope of the function is

`(21-15)/(1-3)=(6)/(-2)=-3`

Thus, the equation of the function in slope-intercept form is

`f(n)=-3n+b`

Find b by substituting coordinates of the first point into the function expression:

`21=-3\cdot 1+b\\ \\b=21+3\\ \\b=24`

Therefore,

`f(n)=-3n+24`