Answer:
see below
Step-by-step explanation:
65 - 32 = 13
13 divide by 65 = 0.20
0.20 x 100% = 20%
so the percentage drop is 20%
therefore, Marcus is correct.
Pretty sure just draw same line but a to r and b to s
Answer:

Step-by-step explanation:
Given


Required
The explicit formula
First, calculate 
Set n=2; So:


Substitute -25 for 


Calculate the common difference (d)



So, the nth term is:


Open bracket

Collect like terms


Answer:
Event A - 1/3
Event B - 4/9
Step-by-step explanation:
Add them together 3+4+2= 9
then put them in to fractions...
80 divided by 15 Is =5.333333 which I don’t know how to round it but it would be around 5 at least