I don't understand what you mean by 300 and 70, unless you meant 300/70 (in that case it would be 30/7).
5/10 would be 1/5
8/100 would be 2/25.
Answer:
The average rate of change is 1.275
Step-by-step explanation:
The average rate of change of f(x) from x=a to x=b is given by:

The money Terry invested is modeled by the function
where x represents number of days.
The average rate of change from day 2 to day 10 is given by:

The average rate of change becomes:


I included the graphs of the functions f(x) (given in blue) and g(x) (given in red) in the attached pdf file.
The questions are:
1) Find u(1) and
2) Find v(1)
Solutions:
1) u(x) = f(x) g(x) => u(1) = f(1) * g(1)
From the graphs f(1) = 1 and g(1) = 2, then f(1)*g(1) = 1*2 =2
Answer: 22) v(x) = f(x) / g(x) => v(1) = f(1) / g(1) = 1 / 2 = 0.5
Answer: 0.5