Answer:
f(x) = x^2 is a classic example
f( 3 ) = 9 and
f( -3 ) = 9, but
f^(-1)[9] is undefined because the result can be 3 and -3
9514 1404 393
Answer:
50 m/s
Step-by-step explanation:
Ian's rate was ...
(180,000 m)/(3600 s) = 50 m/s
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There are 1000 meters in a kilometer, and there are 3600 seconds in 1 hour. To find meters per second, divide meters by seconds.
First, count the total number of letters in <span>BURGER AND STARBIRD.
There are 17 letters.
Now count each type of letter you are interested in and divide by 17.
a) There are four R's, so the probability of pulling out an R is 4/17.
b) </span><span>There are two B's, so the probability of pulling out an B is 2/17.
c) Letters A through M appear in the first half of the alphabet.
These letters are from the first half of the alphabet:
</span><span>BGEADABID
There are 9 of them.
</span>The probability of pulling out a letter that appears in the first half of the alphabet is 9/17.
d) <span>These letters are vowels
</span><span>UEAAI
There are five vowels.
</span><span>The probability of pulling out a vowel is 5/17.</span>
Answer: Choice C
scale starts at $5 and goes to $40 with a regular $5 interval
even though we don't start at 0, the difference in bar heights is not exaggerated
graph is not misleading
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Explanation:
Choice A is not true because the vertical axis starts at 5 and not 0
Choice B is the same story as choice A.
Choice D is not true because the vertical axis does not use an irregular interval. The interval or tickmark distance is $5 each time. In other words, the value goes up by 5 each time.
So far, choices A, B and D have been crossed off the list. The only thing left is choice C.
Despite the fact that the vertical axis starts at 5, instead of 0, the graph is not misleading. The heights of the bars can be compared to see that brand H is the most expensive brand. So in a sense, we can ignore the data values along the vertical axis and still be able to see that brand H is the most expensive. The other brands are close to one another in cost.
side note: the bar graph should have a zig-zag line at the very bottom of the vertical axis to indicate "we are not starting at y = 0". This is handy if you happen to start with much larger y values.
