Make sure your calculator is in degrre mode when doing these.
so the answer is 0.78
the right system of equations to describe the situation would
be on the form:
x1 = 8000 + y1*t
x2 = 8000 + y2*t
where x1 and x2 represents the total money of imogene and her
friend respectively at the end of t years.
now for the value of amount earned, y1 and y2:
b because it contains 40% of the possible results from the random list.
0,1,2,3 v 4,5,6,7,8,9
4 integers to 6 integers
40% success vs 60% fail