Answer:
22.97
Step-by-step explanation:
Given that the average cost of an IRS Form 1040 tax filing at Thetis Tax Service is $138.00.
Let x be the average cost an IRS Form 1040 tax filing at Thetis Tax Service
is given
From std normal distribution table we find 77th percentile z value.
z=0.74
Corresponding X value = 155
i.e. 
where s is the std deviation
Simplify to get
Std deviation = 
I would say 7/24 because when you multiply it you should be able to get a large number.
Answer:
Sorry no one has answered for so long, by now you probably already answered but anyway, the answer would be 31.
Step-by-step explanation:
Because the y axes values are the same, we just need to figure out how far they are on the x axes. Which is indeed 31.
The absolute value of an given number is always positive. So, when adding two to any positive number will always be greater than the number by itself.
I'm pretty sure the answer to your question is -3/5 + 4/5. C.
