Find the domain of the function.f(x) = 
A. (-?, 0) ? (0, ?)
B. (-?, ?)
C. (-1, ?)
D. (-?, -1) ? (-1, ?)
Answer: B
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Apply Green's Theorem to evaluate the integral.
(5y + x) dx + (y + 4x) dyC: The circle (x - 6)2 + (y - 3)2 = 9
A. 9? B. -6 C. -54 D. -9?
Find the opposite of the polynomial.-7a3 + 7a2 + 7a - 4
A. -7a3 + 7a2 + 7a + 4 B. 7a3 - 7a2 - 7a + 4 C. 7a3 + 7a2 + 7a - 4 D. -7a3 - 7a2 - 7a - 4
Solve the problem.A bridge is built in the shape of a semielliptical arch. It has a span of 104 feet. The height of the arch 28 feet from the center is to be 8 feet. Find the height of the arch at its center.
A. 8.31 feet B. 9.49 feet C. 14.86 feet D. 28.34 feet
Solve the problem.Ozone levels inside a building should not exceed 50 parts per billion (ppb). In a scientific study, an air filter was able to remove 49% of the ozone entering a building. Approximate the range of ozone concentrations in outside air that this filter will reduce to an acceptable level.
A. At most 118 ppb B. At most 98 ppb C. between 78 and 98 ppb D. At least 98 ppb