Sarah wants to print copies of her artwork. At the local print shop, it costs her $1 to make 5 copies and $5 to make 25 copies.
Which equation represents this direct variation?
Please help!!
Please help!!
2 answers:
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Answer:
Step-by-step explanation:
There are a couple of ways to solve this, depending on what you already know.
Point-Slope Form
where <em>m</em> is the slope and
is a point on the line.
First, calculate the slope using the two given points .
.
Fill in the point-slope pattern
There's the equation in slope-intercept form ().
Slope-Intercept Form
Use directly.
Find the slope just like the above, so .
Now, plug one of the points (either one!) together with <em>m</em> into
Now you know the value of <em>b</em>, so the equation for the line is
I hope this helps you
Answer:
Step-by-step explanation:
We want the probability that the 35 cars are loaded onto the ferry. Therefore:
Since
μ=1.8 and σ=0.5 we have:
P(X<35 )=P ( X−μ<35−1.8 )=P((X−μ)/σ<(35−1.8)/0.5)
Since
(x−μ)/σ=Z and
we have:
Use the standard normal table to conclude that: