Solve the problem. Write your answer using scientific notation.If the speed of light is 3.00 × 108 m/sec, how long does it take light to travel 
the distance from the sun to Mars?
A. 7.6 × 102 min
B. 7.6 × 102 sec
C. 76 sec
D. 7.6 × 103 sec
Answer: B
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What is the best description of the technique of organizing a curriculum by using thematic units?
a. Structured drill and practice occurs for each mathematics content area before students are asked to solve real-world problems. *b. Problems in a unit are chosen not only to bring out important mathematics, but also to be relevant to a given real-world situation. c. Assessments are built into each unit so teachers can gather valuable information about students' understanding and determine the path future instruction should take. d. Students experience computer-assisted instruction that provides feedback about concepts with which they struggle
Factor the perfect square trinomial completely.x2 - 15x + 225
A. (x + 15)2 B. (x + 15)(x - 15) C. (x - 15)2 D. prime
Solve the following system by any appropriate method. If there is no real number solution, so state.xy = 110x - y = 3
A. (
, 2), (- 
, -5)
B. (-2, 2), (5, -5)
C. (2, 
), (-5, - 
)
D. no real solution
Solve.The speed of a vehicle is inversely proportional to the time it takes to travel a fixed distance. If a vehicle travels a fixed distance at 20 miles per hour in 45 minutes, how fast must it travel to cover the same distance in 60 minutes?
A. 
miles per hour
B. 135 miles per hour
C. 15 miles per hour
D. 
miles per hour