Solve.Ryanne's imported car has a gas tank that holds 66 liters of gas. She filled her tank at the beginning of a trip and used 4 gallons during the trip. How many liters of gas remained in her tank at the end of the trip? Round your answer to the nearest hundredth if necessary.
A. 316.14 L
B. 64.94 L
C. 50.84 L
D. 15.16 L
Answer: C
Mathematics
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Multiply. Write the product in lowest terms.
of 70
A. 84
B. 30
C. 
D. 1
Mathematics
Identify where f is increasing or where f is decreasing, as indicated. Round your answer to two decimal places when appropriate.f(x) = -4x2 + 8x - 9; decreasing
A. [-1, ?) B. [1, ?) C. (-?,1] D. (-?, -1]
Mathematics
Graph the function using its vertex, axis of symmetry, and intercepts.f(x) = -x2 + 6x
A. vertex (-3, -9)
intercept (0, -18)
B. vertex (3, -9)
intercept (0, -18)
C. vertex (-3, 9)
intercepts (0, 0), (- 6, 0)
D. vertex (3, 9)
intercepts (0, 0), (6, 0)
Mathematics
Find the slope of the line. 
A. 7 B. -1 C. -7 D. 1
Mathematics