Answer:sum: -1/6
Step-by-step explanation:
Look at deonomators
assuming that the deonomenators are 5x+15y and 2x+6y
find their LCM
factor
5x+15y=5(x+3y)
2x+6y=2(x+3y)
LCM=10(x+3y)=10x+30y
multiply 2/(5x+15y) by 2/2=4/(10x+30y)
multiply 1/(2x+6y) by 5/5=5/(10x+30y)
if we add them
9/(10x+30y)
Answer: 
Step-by-step explanation:
Hypothesis testing

For this problem, we need to use the t-student distribution to make inference about the data. We calculate the t-statistics as below:

Using a t-statistics table, or using the function TDIST in Microsoft Excel with
with two-tailed distribution, we obtain
.
The correct answer is C) <span>(2, -3/400) Hope this helps!!!!</span>
Now I'm not completely sure of this answer but by my calculations the member can visit at least 36 times with $42.