ANSWER
Average Rate of Change

EXPLANATION
To find the average rate of change of y=f(x) from x=a to x=b means finding the slope of the secant line joining the points
(a,f(a)) and (b,f(b))
The slope of the secant line joining these points is

This gives the average rate of change of the function.
Alright so here it is
325/50=6.5
6.5*2=13
It would take 13 millimeters of sunscreen to cover 325 cm of skin
I think it is 42 because 2.75 + 4.25 is 7 x 6= 42
Answer:1.15
Step-by-step explanation:
2/5 =.40
.75+.40=1.15