Answer:
<h2><em>
vol= 10366.3175in²</em></h2>
<em></em>
Step-by-step explanation:
So this is a cylinder
<h2>formula:
π r²h</h2>
R= 8.75in
h=43.12in
So it will be = 3.14x8.75²x43.12
=> 3.14x76.5625x43.12
3.14x 3301.375
<h2><em>
10366.3175in²</em></h2>
<em></em>
<em>i think it is correct </em>
<em>.</em>
<em>stay safe</em>
<em>.</em>
<em>have a nice TIME</em>
A) T(m) = -0.16m +331.3
B) T(2015) = 8.9 . . . seconds
_____
The linear regression function of a graphing calculator can find the equation of the line easily. Or, you can use the 2-point form of the equation of a line.
.. T(m) = (10.5 -14.5)/(2005 -1980)*(m -1980) +14.5
.. T(m) = -0.16(m -1980) +14.5
The intersection is where the sets overlap. picture a Venn diagram (two overlapping circles). The intersection is only the overlap part. So for this problem that would be C. {20}