Math Ii Exam Worksheet - Boulton Stats Review Page 3
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1
Given : S
=
n [ 2 a
+ ( n - 1) d ]
n
1
2
An outdoor theater has 37 seats in the first row, 40 seats in the second row, and 43
seats in the third row. If this pattern continues, what is the total number of seats in
the first 10 rows?
F 520
G 505
H 120
J 320
9
Which equation represents the statement below?
“ a is inversely proportional to b .”
A a = k + b
B a = kb
b
C a =
k
k
D a =
b
10 If y varies jointly with x and z, what is the constant of proportionality when y = 30,
x = 4, and z = 5?
3
F
2
G 21
2
H
3
J 24
11 The amount of work ( W ) done when lifting an object varies jointly with the mass of
the object ( M ) and the distance the object is lifted ( D ). Which equation models this
relationship?
k
A W =
MD
kM
B W =
D
C W = kMD
kD
D W =
M
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