Multiply or divide,- t2 + 5t +^6
53.^7 12 -^281
212 - 5 f - 12
55.x + x —^6. 6t2~ t~ 15
49f 3
t —2t — 3
t2 + 3t+25x + 652.54.c 4- 3c + 2. c + 2
c2 — 4c + 3 ' c — 3
5 x 2 + lO x — 15. 2 x 2 + 7 x + 3
5 — 6x + x 2 4x — 8x — 5x2 - x — 6 xz + 4x + 4 56. x2 — 4xx + x — 20
x2 + lOx + 25Loan Payments The formula below gives the monthly payment m on a loan as
a function of the amount borrowed A, the annual rate of interest r (expressed
as a decimal), and the number of months n of the loan. Use this formula and a
calculator for Exercises 57-60.
m = >(e )(i + n )"- W hat is th e m onthly paym ent on a lo an of $1500 at 8% an n u a l interest paid
over 18 m onths? - W hat is th e m onthly pay m en t on a loan of $3000 at 6% an n u a l interest paid
over 24 m onths? - Think About a Plan Suppose a family w ants to b uy th e h ouse
advertised at th e right. They have $60,000 for a dow n paym ent. Their
m ortgage will have an an n u a l interest rate of 6%. The loan is to be
repaid over a 30-yr period. How m u ch will it cost th e family to repay
this m ortgage over the 30 yr?
- W hat inform ation can you o btain from th e form ula above?
- How can you use th e inform ation given by th e form ula to solve
the problem?
- Auto Loans You w an t to p u rc h ase a car th a t costs $18,000. The car dealership
offers two different 48-m onth financing plans. The first p lan offers 0% interest for
4 yr. The second p lan offers a $2000 discount, b u t you m u st finance th e rest of the
p u rc h ase price at an interest rate of 7.9% for 4 yr. For w hich financing p lan will your
total cost b e less? How m u ch less will it be?
^Lj-ilyRealty
Se a r c h H o m es
$300,000
518 Main St.
4 Bedroom 2 Bath•< Usting 2 of 35- Error Analysis In the w ork show n at th e right,
w hat error did th e stu d en t m ake in dividing the
rational expressions? - Open-Ended W rite two rational expressions.
Find their product. - Reasoning Forwhatvaluesofxisthe
2 x
expression 6x
Explain your reasoning.
5x — 12. — 3x — 12
x - 16 undefined?I
PowerAlgebra.com ^ Lesson 11-2 Multiplying and Dividing Rational Expressions 6 7 5