Question

:D

Answer 1

\[\begin{align*}P\left(1950<X<2050\right)&=P\left(\frac{1950-1975}{25}<\frac{X-1975}{25}<\frac{2050-1975}{25}\right)\\
&=P(-1<Z<3)
\end{align*}\]

Answer 2

http://www.wolframalpha.com/input/?i=P%28-1%3CZ%3C3%29

Answer 3

yeah

Answer 4

sure

Answer 5

Are the points (1,10), (2,5), and (4,1.25)?

Answer 6

Fourth choice. When \(n=1\), the first term in the sequence is
\[a_1=10\left(\frac{1}{2}\right)^{1-1}=10\]
The average rate of change over 0 to 2 is
\[\frac{a_2-a_0}{2-0}=\frac{5-20}{2-0}=-\frac{15}{2}\]

Answer 7

is your rate of change going to be + or - ?

Answer 8

by visual: we go from 10 to 1.25 ..... so we are dropping, average rate is slowing down, or negative

Answer 9

since 1,10 is a point, then a1 = k(..)^0 = k