Solve the equation.-2.5x + 11.85 = -3.9
A. 6.3
B. -7.95
C. -15.75
D. 3.2
Answer: A
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Provide an appropriate response.You brake your car from a speed of 55 mph. The table shows data that represent your car's speed versus the amount of time elapsed from the moment that you began to brake.
The graph below displays the data in the table. Refer to the graph to answer the questions.Speed (mph)
Elapsed Time (seconds)(i) For what interval of time is the speed of your car increasing? (ii) For what interval of time is the speed of your car decreasing? (iii) For what interval of time is the speed of your car constant?
A. (i) 0 to 4 seconds (ii) None (iii) 4 to 6 seconds B. (i) 0 to 5 seconds (ii) None (iii) 5 to 6 seconds C. (i) None (ii) 0 to 4 seconds (iii) 4 to 6 seconds D. (i) None (ii) 0 to 5 seconds (iii) 5 to 6 seconds
Solve the problem.An airline with two types of airplanes, P1 and P2, has contracted with a tour group to provide transportation for a minimum of 400 first class, 900 tourist class, and 1500 economy class passengers. For a certain trip, airplane P1 costs $10,000 to operate and can accommodate 20 first class, 50 tourist class, and 110 economy class passengers. Airplane P2 costs $8500 to operate and can accommodate 18 first class, 30 tourist class, and 44 economy class passengers. How many of each type of airplane should be used in order to minimize the operating cost?
A. 14 P1 planes and 7 P2 planes B. 13 P1 planes and 9 P2 planes C. 5 P1 planes and 22 P2 planes D. 9 P1 planes and 13 P2 planes
Solve the combined inequality and graph the solution set. Write the solution in interval notation.-27 ? -4x + 1 ? -7
A. [-7, -2]
B. (-7, -2)
C. (2, 7)
D. [2, 7]
Use the graph of the equation 
shown below to identify the graph of one complete cycle of the equation 
.
?
?
A. ?
B. ?
C. ?
D. ?
?
E. ?
