Solve the problem.By switching service providers, a family's telephone bill decreased from about $50 a month to about $46. What was the percent of decrease? Round to the nearest tenth if necessary.
A. 9%
B. 8%
C.
| 4% |
D. 8.7%
Answer: B
Mathematics
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Determine whether the relation is a function.{(-1, -6), (2, -5), (4, 9), (8, -5), (10, 3)}
A. Function B. Not a function
Mathematics
Find the vertex, focus, and directrix of the parabola. Graph the equation.x2 - 6x = 8y - 41
A. vertex: (3, 4)
focus: (3, 6)
directrix: y = 2
B. vertex: (3, 4)
focus: (5, 4)
directrix: x = 1
C. vertex: (3, 4)
focus: (3, 2)
directrix: y = 6
D. vertex: (3, 4)
focus: (1, 4)
directrix: x = 5
Mathematics
Use Euler's method to approximate the indicated function value to three decimal places using 
= 1 - e-x; y(0) = 0; find y(0.4)
A. 0.054 B. 0.042 C. 0.072 D. 0.051
Mathematics
Find the volume. Use ? ? 3.14. Round to the nearest tenth when necessary.a cone with height 11 cm and diameter 5 cm
A. 431.8 cm3 B. 115.1 cm3 C. 287.8 cm3 D. 72 cm3
Mathematics