1.
Stan the Hot Dog Man sells 100 hot dogs per day for $2 each, so his daily revenue is $200. He estimates that for every 25 cents he increases the price of a hot dog, he will sell 5 fewer. What range of prices can he charge so that his daily revenue is at least $225?
A.
$2.25-$2.50
B.
$2.50-$4.50
C.
$2.00-$4.00
D.
$3.00-$4.50
Hint
2.
In the triangle, sin
A
= ____.
A.
5
B.
C.
D.
Hint
3.
Find the value of cos 62° to the nearest ten-thousandth.
A.
1.8807
B.
0.8829
C.
0.8988
D.
0.4695
Hint
4.
Find the value of
x
. Round to the nearest tenth.
A.
78.8
B.
131.6
C.
2.1
D.
20.3
Hint
5.
Write the equation of the sine function if the amplitude is 5 and the period is 360°.
A.
y
= sin 5
B.
y
= - sin 5
C.
y
= 5 sin
D.
y
= -5 sin 5
Hint
6.
Solve
.
A.
A
= 16°,
B
= 164°
B.
A
= 16°,
B
= 74°
C.
A
= 17°,
B
= 73°
D.
A
= 5°,
B
= 85°
Hint
7.
A long ramp that leads to a building entrance is 45 feet. The stairs to the entrance have a vertical height of 6 feet. What is the angle of incline of the ramp?
A.
about 18°
B.
about 10°
C.
about 4°
D.
about 8°
Hint
8.
Find sin 315° by drawing a reference angle.
A.
B.
C.
D.
1
Hint
9.
Find cos 420° by drawing a reference angle.
A.
B.
C.
1
D.
Hint
10.
What is the length of one complete cycle of a function called?
A.
reference angle
B.
frequency
C.
amplitude
D.
period
Hint