Solve.The amount of gas that a helicopter uses is directly proportional to the number of hours spent flying. The helicopter flies for 4 hours and uses 20 gallons of fuel. Find the number of gallons of fuel that the helicopter uses to fly for 6 hours.
A. 35 gallons
B. 36 gallons
C. 24 gallons
D. 30 gallons
Answer: D
Mathematics
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Find the root.
A. Not real number B. 31 C. 100 D. 10
Mathematics
Provide an appropriate response.The prices (in dollars per unit) for 3 textbooks are represented by the price vector: P = 
. A university bookstore orders these books in the quantities given by the column vector: Q = 
. Use the matrix operations on a graphing calculator to find the total cost (in dollars) of the purchase.
What will be an ideal response?
Mathematics
Simplify the expression.12(-9)
A. -1080 B. -208 C. -108 D. -120
Mathematics
Use the graph of y = g(x) to answer the question.
What is the range of g?
A. {y| -2 ? y ? 4} B. {y| -2 ? y ? 5} C. {y| 2 ? y ? 4} D. all real numbers
Mathematics