Help w/ 3 College Algebra Problems

See attached file.

1

.

Solve

and

write interval notation for the following solution set.

Then graph the solution set.

|

x

| ≤

4

.5

2

. Marilyn receives a $25

,

000 bonus from her company and decides to put the money toward a new car that she will need in 2 years. Simple interest

is

directly proportional to the principal and the time invested. She compares two different bank’s rates on money market accounts. If she goes with Bank of A, she will earn $750 in interest, but if she goes with Bank B, she will earn $1500. What is the interest rate on money market accounts at both banks?

3. If

D

and

C

find

,
4

)

1

(

and

undefined,

is

)
2
(
,
)
(

=

–

–
–
–
=

F

F
x
D
x
C
x
F

_1390567934.unknown