Algebra word problems – part 2

ALGEBRA:
QUESTION:13
Find the Area of a rectangle the length of a rectangle is 3 more and 3 times the width of the
Rectangle.

 

 
Solution:
Take the Width as x cm
And the Length is three times and 3 more than
The Width. So, Length is 3x+3.

 
The Area of a Rectangle is:

 
Length * Width

 
(3x+3) ( x)

 
Expand the terms,

 
3x^2 +3x <------------- Answer.

 

 

 
AlGEBRA:
QUESTION: 14

 
Find (k^9)^-5 when k = 0.

 
Solution:

 
Using Exponent Law we can simplify the expression ,

 
K^9*-5 = k ^ -45 = 1/ k^45

 
If k =0 the value is undefined.