Question 1(Multiple Choice Worth 1 points)
(02.04 LC)
A student is running a 3-kilometer race. He runs 1 kilometer every 2 minutes, Select the function that
describes his distance from the finish line after x minutes.
f(x)=-1/3x+2
f(x)=-1/2x+3
f(x)=1/2x+3
f(x)=1/3x+2

f(x)=-1/2x+3

Step-by-step explanation:

In this problem, the student is running a 3-kilometer race.

This means that the total length of the race is 3 km.

We also know that the student runs 1 kilometer every 2 minutes. For a uniform motion, the speed is given by

where in this case,

d = 1 km is the distance

t = 2 min is the time

So the speed is

We can therefore write the distance covered by the student (from the starting line) after x minutes as

However, here we want to write an expression for the distance of the student from the finish line.

Since the distance from the finish line at x = 0 is 3, therefore the distance from the finish line after x minutes is:

d = 3 - y'

So

which corresponds to the option:

f(x)=-1/2x+3

an advantage of the standard deviation is that it increases as the dispersion of the data increases. e. the interquartile range is preferred when the data are not skewed or no have outliers. an advantage of the standard deviation is that it uses all the observations in its computation.

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step-by-step explanation: