Math
233B
Exam
#4; Chapter 8
Problems are worth 10
points
each. You
must
show
all work to
receive
full credit.
1.
Solve
using
the square root property.
2.
Solve
by
completing
the square.
3x'-4x
+
9
=
0
/-iLvJ
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Square Root Property - Intermediate Algebra - Solved Exam, Exams of Algebra
Its the important key points of solved exam of Intermediate Algebra are:Square Root Property, Polynomial Functions, Conic Sections, Rational Expressions and Equations, Equations of Lines in Applications, Quadratic Equations, Alexandrian Greek Mathematician, Polynomial Division, Fahrenheit and Celsius, Celsius Temperature, Set Notation
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2012/2013
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Math 233BExam #4; Chapter 8 Problems are worth 10 points each. You must show all work to receive full credit.
Solve using the square root property.
Solve by completing the square.
3x'-4x + 9 = 0 / - i L v J
Solve using the quadratic formula, x = 3x^-x-4 = 0
- h ±4h^- 4ac 2^
Find the function, / ( A ) , that has the solutionsx = 1 + /V2 andx = 1 - /
X
X-|+vZt =
A,
- A company's profit (in thousands of dollars) can be approximated over the next 15 years by the function p(n) = 1 .6n^ + 5« - 31 (« = years from now). a. Estimate the profit 7 years from now.
^ V35--3V
b. Estimate the time needed for the company to break even.
3X
7 Solve for w. v
- Solve for .r.
i
dd.c-
- A farmer has 500 feet of fencing and wants to enclose a rectangular plot of land. One side borders the river, so it doesn't need any fencing. The function that models this case is a. For what value of w is the area largest?
b. What is the maximum area? (^) L=500-2w
- Match each graph to its equation.
a. / ( x ) = -2(x +3)^-
b. fix) = -2(x + iy -
c. / W = -2(x-3)^+
d. f(x) = -2(x-]y +
6
7 X
V
- 5_?_^ X
Solve each inequality, express the answer in interval notation, and graph it on a number line.
.X (2 A :-5)( A : + 7)<