we are given

where
y is average gas mileage in miles per gallon
x is speed in miles per hour
we have to find average gas mileage at a speed of 60 miles per hour
so, we have

now, we can plug it and find y

we get

so,
the best approximate for the average gas mileage at a speed of 60 miles per hour is 30.7 mi/gal...........Answer
I'm pretty sure simplest form would still be 865:2678
I could be wrong tho
Answer:
Let X the random variable of interest "number of tweets with no reaction", on this case we now that:
And the expected value is given by:

So we expect about 71 tweets with no reaction for this case.
Step-by-step explanation:
Previous concepts
A Bernoulli trial is "a random experiment with exactly two possible outcomes, "success" and "failure", in which the probability of success is the same every time the experiment is conducted". And this experiment is a particular case of the binomial experiment.
The binomial distribution is a "DISCRETE probability distribution that summarizes the probability that a value will take one of two independent values under a given set of parameters. The assumptions for the binomial distribution are that there is only one outcome for each trial, each trial has the same probability of success, and each trial is mutually exclusive, or independent of each other".
The probability mass function for the Binomial distribution is given as:
Where (nCx) means combinatory and it's given by this formula:
Solution to the problem
Let X the random variable of interest "number of tweets with no reaction", on this case we now that:
And the expected value is given by:

So we expect about 71 tweets with no reaction for this case.
Answer:
A. 6 units left and 9 units down
Step-by-step explanation:
Given:
y = (x – 5)^2 + 7
y = (x +1)^2 - 2
The graph of y = (x – 5)^2 + 7 is a parabola 5 units right and 7 units up
The graph of y = (x +1)^2 - 2 is a parabola 1 unit left and 2 units down
Transformation is the difference in the shift
Transformation = 6 units left and 9 units down.
Therefore, answer A. 6 units left and 9 units down
Hope this will helpful.
Thank you.