Subtract three from either side. That will give you 4r=-21. Divide -21 by 4 and r will equal -5.25.
Answer:
See Explanation
Step-by-step explanation:

Hence, x will take values other than 1.
Answer:
Step-by-step explanation:
assuming that the X is a multiplication symbol and not a variable, because the multiplication symbol is * not x, 5*5/2*7=25/14=1 and 11/14
Answer:
$0.13
Step-by-step explanation:
The increase is the <em>difference</em> between the 2009 price and the 2008 price.
$9.50 - $9.37 = $0.13