Find the rate of change in the expression please help

Given:

The points are (1,9.5), (2,12), (3,14.5), (4,17).

To find:

The rate of change in the expression.

Solution:

Clearly the value of y increasing with respect to x by a constant rate.

Formula of rate of change is

Consider the any two points from the expression (1,9.5) and (2,12).

Therefore, the rate of change is 2.5.

-4

step-by-step explanation:

(-4+8)=-(4-8)=-8+4=-4

you can first factor out the n to get n(1+5). we know that 1+5 is 6, so we just have 6n.