17) 11.1
18) 21.4
19) 30.5
20) 16.5
21) 26.5
Answer:

or in slope y-intercept form :

Step-by-step explanation:
The easiest way of find the answer for this is to use what is called the "point-slope" form of a line, because you are in fact given the value of the slope (m) and also a point
it goes through:

In our case the equation becomes:

This can also be written in the slope-intercept form by solving for "y" and operating to remove the parenthesis:

- First of all, a 2 foot kangaroo is casting a 7 foot shadow.
- Next we do 7 divided by 2 which equals 3.5.
- Since we know the shadow is going to be 3.5x the object size we have to divide its shadow by 3.5
- 14 divided by 3.5 is 4 so the Eucalyptus tree is 4ft long
<u><em> Your answer=4ft </em></u>
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Hope this helps!