Provide an appropriate response.Find the area of the gray ring formed by the cross-cut section. Round to the nearest tenth. 
A. 11 cm2
B. 25.6 cm2
C. 102.3 cm2
D. 119.6 cm2
Answer: C
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Use a sum or difference identity to find the exact value.tan 105°
A. 
B. -2 - 
C. 
D. 2 + 
Solve the problem.Given that the polar equation r = a(1 - e2)/(1 + e cos ?) models the orbits of the planets, estimate the smallest possible distance between Earth, for which 
and 
and Venus, for which 
and 
A. Zero astronomical units B. About 0.2 astronomical units C. About 0.4 astronomical units D. About 2 astronomical units
First, use front end rounding to estimate each answer. Then find the exact answer.The fully loaded car cost $2357 more than the basic model. If the basic model cost $18,433, what did the fully loaded car cost?
A. estimate: $18,400 + $2300 = $20,700; exact: $20,790 B. estimate: $18,000 + $2000 = $20,000; exact: $20,790 C. estimate: $18,000 + $2300 = $20,300; exact: $20,790 D. estimate: $20,000 + $2000 = $22,000; exact: $20,790
Identify the vertex, axis, domain, and range of the parabola.f(x) = 2(x - 3)2 - 6
A. vertex: (-3, -6) axis: x = -3 domain: (-?, ?) range: (-?, -6] B. vertex: (-3, -6) axis: x = -3 domain: (-?, ?) range: [-6, ?) C. vertex: (-3, 6) axis: x = -3 domain: (-?, ?) range: [-6, ?) D. vertex: (3, -6) axis: x = 3 domain: (-?, ?) range: [-6, ?)