<em>subtract 2 from both sides</em>
<em>divide both sides by (-4)</em>

Answer:
128
Step-by-step explanation:
5+2=7
5-2=3
2^5=32
2^2=4
32*4=128
Hope this helps:)
For the first image can you give us the choices for each one?
Answer:
15/17
Step-by-step explanation:
The probability density function (pdf) is;
f(x)=
for a ≤ x ≤ b.
while the mean is given as 
And the standard deviation given as 