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Math 2303
Extra Credit – Test 3
You may work some, all or none of these problems for extra credit on Test 3.
Your work
must be turned in at the beginning of the testing period on Thursday, April 9.
No late
work will be accepted.
1.
Complete the table and see if you can reach a conclusion about the equation
(
29
2
2
2
x
y
x
y
+
=
+
.
x
y
(
29
2
x
y
+
2
2
x
y
+
2
3
2
3
2
3
2
3
2.
Solve for x:
0.5(2.6
4)
2.3(1.4
5)
.85(1.8
3.1)
x
x
x

+

=
+
3.
Suppose you want to purchase a house that will cost $525,000.
You make a down
payment of 12.5% and finance the rest at 5.842% interest compounded monthly for 20
years.
a.
Find the monthly payment.
b.
Find the total amount of payments.
d.
Find the amount of interest paid over the life of the loan.
4.
Suppose you surveyed your classmates to see if there was any relationship between
time spent studying for the test and grade on the test.
For each student surveyed, you
asked how many hours were spent studying and the score on the grade.
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 Fall '10
 MARKS
 Math

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