Transcript Ch2TestReview1x - Windsor C

Algebra I and Concepts
Ch. 2 Test Review
Directions
1) Get out a piece of paper, put your name and
“Ch. 2 Test Review” at the top
2) As each slide appears, work through the
problems shown. You may not finish them all,
that is ok! Don’t rush, work through what you
can.
3) When the answer slide is posted, check your
answers, find and correct mistakes. Ask
questions if necessary.
4) Finish any questions by looking up the review on
my website
5) This will be turn in on MONDAY with your
homework
Section 2-1
Translate the verbal phrases into equations
1) Three times r is less than 15 equals 6.
2) The sum of q and four times t is equal to 29.
3) A number n squared plus 12 is the same as
the quotient of p and four.
Section 2-1
Translate the verbal phrases into equations
1) Three times r is less than 15 equals 6.
15 – 3r = 6
2) The sum of q and four times t is equal to 29.
q + 4t = 29
3) A number n squared plus 12 is the same as
the quotient of p and four.
p
n +12 =
4
2
Section 2-1
Change the equations into verbal phrases.
1) 7x – y = 23
2) 3(g + 8) = 4h – 10
3) J + 16 = 35
Section 2-1
Change the equations into verbal phrases.
1) 7x – y = 23 The difference of 7 times a
number x and a number y is 23
2) 3(g + 8) = 4h – 10 3 times the sum of a
number g and 8 equals the difference of a
number h times four and 10
3) J + 16 = 35 The sum of a number j and 16 is
the same as 35
Section 2-2: Solve the following onestep equations
1) 18 + x = 40
4) x
6
2) 44 = t – 72
= -9
5) 3 r = 15
5
3) -4a = 48
6) 3
c
=
4 24
Section 2-2: Solve the following onestep equations
1) 18 + x = 40
x = 22
4) x
6
1) 44 = t – 72 t = 116
= -9
x = -54
5) 3 r = 15
r = 25
6) 3
c = 18
5
2) -4a = 48
a = -12
c
=
4 24
Section 2-3: Solve the multi-step
equations
6
(n +15) = 66
7
1) 2x – 4 = 8
3)
2) * r + 4 = 7
4) 5(g + 8) – 7 = 103
3
Section 2-3: Solve the multi-step
equations
1) 2x – 4 = 8 x = 6
2)
r+4
= 7 r = 17
3
3)
6
(n +15) = 66
7
n = 62
4) 5(g + 8) – 7 = 103 g = 14
Section 2-4: Solve the equations with a
variable on each side
1) 9x – 4 = 2x + 3
3) 3(3m – 2) = 2(3m + 3)
4) 6(3a + 1) – 30 = 3(2a – 4)
2) 6.78j – 5.2 = 4.33j + 2.15
Section 2-4: Solve the equations with a
variable on each side
1) 9x – 4 = 2x + 3 x = 1
3) 3(3m – 2) = 2(3m + 3)
m=4
4) 6(3a + 1) – 30 = 3(2a – 4)
2) 6.78j – 5.2 = 4.33j + 2.15
a=1
J=3
2-4: Solve the equations with special
solutions
1) -5(3 – q) + 4 = 5q – 11
2) 7 – 3r = r – 4(2 + r)
2-4: Solve the equations with special
solutions
1) -5(3 – q) + 4 = 5q – 11
All real number solutions
2) 7 – 3r = r – 4(2 + r)
No Solutions
Section 2-5: Solve the absolute value
equations and graph the solution set
1)
3x - 3 = 9
2)
2t - 4 = 8
Section 2-5: Solve the absolute value
equations and graph the solution set
1)
3x - 3 = 9
x = 4 and -2
2)
2t - 4 = 8
t = 6 and -2
Section 2-6: Solve the following
proportions
1)
7
x
=
10 14
2)
x+5 2
=
3
7
3) Use cross products to determine whether the
following is a proportion (yes or no)
Section 2-6: Solve the following
proportions
1) 7 = x
10 14
x = 9.8
2)
x+5 2
=
3
7
x = -4.14
3) Use cross products to determine whether the
following is a proportion (yes or no) 7 = 42
121 676
No. 4,732 does not = 5, 082
Extra: Word Problems
Mrs. Huseman’s cell phone plan charges a
monthly fee of $75 plus 5 cents per minute she
talks on the phone. Ms. Howard’s cell phone
plan charges a monthly fee of $55 plus 7 cents
per minute. Set up an equation and solve to find
how many minutes the two plans are equal.
Extra: Word Problems
Mrs. Huseman’s cell phone plan charges a
monthly fee of $75 plus 5 cents per minute she
talks on the phone. Ms. Howard’s cell phone
plan charges a monthly fee of $55 plus 7 cents
per minute. Set up an equation and solve to find
how many minutes the two plans are equal.
.05x + 75 = .07x + 55
x = 1,000
Extra: Word Problems
Chris saved twice the number of quarters that
Nora saved plus 6. The number of quarters Chris
saved is also 5 times the difference of the
number of quarters and 3 that Nora saved.
Write and solve an equation to find the number
of quarters Chris and Nora saved.
Extra: Word Problems
Chris saved twice the number of quarters that Nora
saved plus 6. The number of quarters Chris saved is
also 5 times the difference of the number of
quarters and 3 that Nora saved. Write and solve an
equation to find the number of quarters Chris and
Nora saved.
2x + 6 = 5(x – 3)
x = 7, which means Nora saved 7 and Chris saved 20