Answer:
4
Step-by-step explanation:
If you set the numbers in order from least to greatest, you will find that 4 is the middle value(median)
Step-by-step explanation:
(b) If
then
Note that
cancel out so we get

Solving for
we get

(c) I'm not sure what the problem is asking for but here goes. As r doubles,
becomes

Answer:
6 or -2
Step-by-step explanation:
|3t - 6| = 12
3t - 6 = 12
3t = 18
t = 6
3t - 6 = -12
3t = -6
t = -2
Answer: x^2+2x+1
Step-by-step explanation:
Answer:
Peter is a-8 in 9 years, (a-8)+ 9+ a+ 9= 76