Regents High School Examination - Mathematics B Worksheet - The University Of The State Of New York, 2004 Page 5

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11 Which equation models the data in the accompanying table?
Use this space for
computations.
Time in hours, x
0
1
2
3
4
5
6
Population, y
5
10
20
40
80
160
320
(1) y = 2x + 5
(3) y = 2x
x
x
(2) y = 2
(4) y = 5(2
)
12 The amount of juice dispensed from a machine is normally distributed
with a mean of 10.50 ounces and a standard deviation of 0.75 ounce.
Which interval represents the amount of juice dispensed about 68.2%
of the time?
(1) 9.00–12.00
(3) 9.75–11.25
(2) 9.75–10.50
(4) 10.50–11.25
5
13 If θ is an acute angle such that sin θ =
, what is the value of sin 2θ?
13
12
60
(1)
(3)
13
169
10
120
(2)
(4)
26
169
14 Which function is symmetrical with respect to the origin?
– 5
x + 5
(1) y =
(3) y =
x
x
(2) y = 5 – x
(4) y = 5
1
1
+
x
y
15 The expression
is equivalent to
1
1
_
x
2
y
2
y – x
xy
(1)
(3)
xy
y – x
xy
(2)
(4) y – x
x – y
[5]
[OVER]
Math. B – June ’04

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