Hector invest 10,000 at the age of 21. he hopes investments will be worth 150,000 when he turns 50 . What is the interest compounded continuously approximately what rate escrow will he need to achieve this goal? Write your answer as a percent rounded to one decimal place.

Step-by-step explanation:

The average rate of change is an algebra thing, whereas the instantaneous rate of change is a calculus thing.  Since this is not a straight line we are simply finding the slope of the straight line that connects the 2 coordinates (4, y) and (9, y).  To find the y's in each case, sub in the x value and solve for y:

If  when x = 4, then  and the coordinate is .

Likewise for the other coordinate when x = 9.   and the coordinate is

Using the slope formula,

and

and

m = .14 rounded