MATH 151 HW Problems To Work Prior To Test One
Problems 1-23 are worth 4 points each. Problem 24 counts 8 points.
1)
Evaluate the expression using the order of operations. Show the result of each operation.
7 10 + 32 2 (17 5) / 4
2)
Graph the inequality o
MATH 151 Problems to Work Prior to Test Two
1)
y = x2 + 2x 8
y-intercept
y = 0 2 + 2(0) 8 = 8
x-intercepts
0 = x2 + 2x 8
0 = ( x + 4) ( 2)
x
y-intercept is (0,-8), x-intercepts are (-4,0) and (2,0)
2)
Spending is below $50 billion in 2003, 2004, 2005, 200
MATH 151 Problems to Work Prior to Test Two
1)
Find the x-intercepts and y-intercepts of the graph of the following equation.
2)
page 85 #54 and 56
3)
Find an equation of the line that is perpendicular to the line
(8, -3). Sketch the graph of both lines.
MATH 151 Problems to Work Prior to Test 3
1) Find the intercepts and vertex, and sketch the graph of the parabola
f ( x) = 3x 2 + 2 x 1
2) Find the function of a parabola that has its vertex at (-2, 3) and goes through the point (1, -6).
3) A business rev
MATH 151 Problems To Work Prior To Test One
1)
7 10 + 32 2 (17 5) / 4
7 10 + 32 2 12 / 4
7)
p2
p+ 5
2
p 25 2 p 2 2 p
7 10 + 9 2 12 / 4
7 10 + 18 12 / 4
p 2 ( p + 5)
( p 5)( p + 5)(2 p )( p 1)
p
( p 5)( 2)( p 1)
7 10 + 18 3
3 + 18 3
15 3
12
2)
p2
2 p2 2 p
MATH 151 New Material For The Final
Show all work.
1) page 230, #8
2)
f ( x) = log 4 ( x + 4 )
a) Sketch the graph of f (x)
b) State the domain of the function.
c) State the range of the function.
d) Find the intercepts of the function.
e) Find
f (14)
Ins
MATH 151 New Material For The Final
1) page 230, #8
a)
$111 billion in 1990 -> (0, 111)
$408.8 billion in 2006 -> (16, 408.8)
f (t ) = y 0 b t
Since the function goes through the point (0, 111),
y 0 = 111
f (t ) = 111 b t
Since the function goes through t