How many tiles 5 in. on a side should be used to cover a portion of a wall 55 in. long by 40 in. high? (See illustration.)
A. 440 tiles
B. 70 tiles
C. 88 tiles
D. 1,750 tiles
E. 113,2 tiles
Answer: C
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Sketch the graph.A generator produces a voltage 
, where t is the time in seconds. Graph V as a function of t for 
.
A. 
B. 
C. 
D. 
Solve the problem.At time t ? 0, the velocity of a body moving along the s-axis is 
When is the body's velocity increasing?
A. t > 4 B. t > 7 C. t < 7 D. t < 4
Provide an appropriate response.
Find A to the nearest 0.1° if a = 13.5 cm and b = 16.1 cm. 
A. 33.0° B. 57.0° C. 40.0° D. 50.0°
Solve the problem.Given that the polar equation r = 
models the orbits of the planets, estimate the closest approach of Pluto's orbit, for which 
and 
to the sun.
A. About 74 astronomical units B. About 30 astronomical units C. About 39 astronomical units D. About 50 astronomical units