1/2 because there are only two sides heads and tails. applies to each time you toss the coin
Answer: First Option
a) exponential function going through point (0, 2) and ending up on the right
Step-by-step explanation:
Look at the attached image, the red line represents a function of the form:

Note that this function cuts to the axis and at the point (0, 1)
Also when x tends to ∞ f(x) tends to ∞ and when f(x) tends to -∞ then f(x) tends to zero.
If we perform the transformation
then the graph of y is equal to the graph of f(x) displaced 1 unit up. Then the new cutting point with the axis y will be: (0, 2) as shown in the attached image (blue line)
The transform function is 
Finally the answer is the first option
All you have to do is divide 321 by 3 to get $107.00 each night
She has -80 because 4 withdrawalsof 50 is 200 subtract the that from 120 its -80
Well 1/8 is smaller than 8/8 so they should not be equal