Use this space for
4 Matthew is a fan of the Air Force’s Thunderbirds flying team and is
computations.
designing a jacket patch for the team, as shown in the accompanying
diagram.
y
y = x
P
Q
x
If P has the coordinates (a,b), what are the coordinates of Q, the
reflection of P in the line y = x?
(1) (a,b)
(3) (–a,b)
(2) (b,a)
(4) (y,x)
5 Sean tells prospective clients that the probability of rain at the dive
location is .2 each day. Which expression can be used to calculate the
probability that it will rain on exactly 5 days of the 7 days at the dive
location?
5
2
(1)
C
(.2)
(.8)
(3)
C
(.5)(.7)
7
5
7
5
2
5
(2)
C
(.2)
(.8)
(4)
C
(.5)(.7)
7
5
7
2
6 Jack wants to plant a border of flowers in the shape of an arc along the
edge of a circular walkway. If the circle has a radius of 5 yards and the
1
angle subtended by the arc measures 1
radians, what is the length, in
2
yards, of the border?
(1) 0.5
(3) 5
(2) 2
(4) 7.5
[3]
[OVER]
Math. B – Jan. ’08