Find the mean 2.6, 0.0, 0.8 2.1 1.5

2.6+0+0.8+2.1+2.5=8    8/5values=  1.6

Step-by-step explanation:

im assuming you meant to have a comma inbetween 2.1 and 2.5?

(d)

step-by-step explanation:

given: the line in the graph passes through points (5,30) and (6,26).

then, the equation of line is:

now, put y=a(n) and x=n,

hence, option d is correct.

b