Answer:
Mary was paid $638
Step-by-step explanation:
Mary was paid 360 $ for working alone because
$40 * 9 = $360
Mary was paid $278
5 % * $5560 = $278
360 + 278 = 638 $
Answer:
and 
Step-by-step explanation:
The null hypothesis
states that a population parameter (such as the mean, the standard deviation, and so on) is equal to a hypothesized value. We can write the null hypothesis in the form 
In this context, the investigator's null hypothesis should be that the average total weight is no different than the reported value by the FAA. We can write it in this form
.
The alternative hypothesis
states that a population parameter is smaller, greater, or different than the hypothesized value in the null hypothesis. We can write the alternative hypothesis in one of three forms

The investigator wants to know if the average weight of passengers flying on small planes exceeds the FAA guideline of the average total weight of 185 pounds. He should use
as his alternative hypothesis.
So, y-intercept is (0,3) and x-intercept is (3/7,0)
Step-by-step explanation:
We are given:

We need to find y-intercept and x-intercept
Finding y-intercept
To find y-intercept we put x =0
Solving:

So, y-intercept is (0,3)
Finding x-intercept
To find x-intercept we put y =0
Solving:

So, x-intercept is (3/7,0)
So, y-intercept is (0,3) and x-intercept is (3/7,0)
Keywords: x and y intercepts
Learn more about x and y intercepts at:
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The answer is option B
hope it helps!!