Answer:
Step-by-step explanation:
Use the slope-intercept form:
m is the slope and b is the y-intercept. The y-intercept is the place where x is equal to 0, and the slope is the change in the y-axis over the change in the x-axis, otherwise known as rise over run ( 
).
If you study the graph, you can see that the line crosses the y-axis at (0,3), so 3 is the y-intercept. Insert into the formula:
Now find the slope. Use the slope formula:
You need two points first. You can use the y-intercept (0,3) and another even point, like (1,6). Insert the values:
The slope is 3. Insert this value:
:Done
I would say b hope this help ☺
Answer:
It'd be C?
Step-by-step explanation:
Well, if you turn 5/2 into a mixed number, it will be 2 1/2, and if you add 2 1/2 to 3, it would be 5 1/2, and C is the only one that shows it. Not only that, you could probably find out with common sense, because there is no subtracting in this problem, but every other answer besides C is subtracting.
Hope this helps
Bit late though lol
Answer: 
Step-by-step explanation:
As per given , we have
n = 11
Since population standard deviation is missing, so we use t-test.
Critical t-value for 99% confidence :
[using two-tailed t-value table]
Confidence interval :
Hence, 99% confidence interval for the mean amount of time that students spend in the shower each day.=
