(Back to the practice test on tutorials 23 - 30)

Intermediate Algebra
Answer/Discussion to Practice Test


Problem 1a: 

 

 

Answer:


 
 
Problem 1b: 

 

 

Answer:


 
 
Problem 1c: 

 

 

Answer:


 
 
Problem 1d: 

 

 

Answer:


 
 
Problem 1e: 

 

 

Answer:


 
 
Problem 1f: 

 

 

Answer:


 
 
 
Problem 2a: 

 
73,200,000
 

Answer:


 
 
Problem 3a: 

 

 

Answer:


 
 
Problem 4a: 

 

 

Answer:


 
 
Problem 5a: 

 

 

Answer:

Since the degree is the sum of the variable exponents and it looks like we have a 2 and a 3 as our exponents, the degree would have to be 2 + 3 = 5.

 
 
Problem 5b: 

 
-8
 

Answer:

Since this is a constant term, it's degree is 0.

 
 
Problem 6a: 

 

 

Answer:

Since the degree of the polynomial is the highest degree of all the terms, it looks like the degree is 5.

Since there are two terms, this is a binomial.

 
 
Problem 6b: 

 

 

Answer:

Since the degree of the polynomial is the highest degree of all the terms, it looks like the degree is 3.

Since there is one term, this is a monomial.

 
 
Problem 6c: 

 

 

Answer:

Since the degree of the polynomial is the highest degree of all the terms, it looks like the degree is 2.

Since there are two terms, this is a trinomial.

 
 
 
Problem 7a: 

 
;  P(-2)
 

Answer:


 
 
Problem 8a: 

 

 

Answer:


 
 
Problem 8b: 

 

 

Answer:


 
 
Problem 9a: 

 

 

Answer:


 
 
Problem 9b: 

 

 

Answer:


 
 
Problem 9c: 

 

 

Answer:


 
 
Problem 9d: 

 

 

Answer:


 
 
Problem 9e: 

 

 

Answer:


 
 
Problem 10a: 

 

 

Answer:


 
 
Problem 10b: 

 

 

Answer:


 
 
Problem 10c: 

 

 

Answer:


 
 
Problem 10d: 

 

 

Answer:


 
 
Problem 10e: 

 

 

Answer:


 
 
Problem 11a: 

 

 

Answer:


 

x = -5, 5

 
 
Problem 11b: 

 

 

Answer:


 

x = -6 and 1

 
 
Problem 11c: 

 

 

Answer:


 

x = 7, -3

 

(Back to the practice test on tutorials 23 - 30)

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Last revised on Jan. 8, 2002 by Kim Seward.