Multiply.-2 ? (-7)
A. 16
B. -16
C. 21
D. 14
Answer: D
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Find the vertex, focus, and directrix of the parabola. Graph the equation.(y + 1)2 = 4(x + 3)
A. vertex: (3, 1)
focus: (3, 2)
directrix: y = 0
B. vertex: (-3, -1)
focus: (-2, -1)
directrix: x = -4
C. vertex: (1, 3)
focus: (2, 3)
directrix: x = 0
D. vertex: (-3, -1)
focus: (-3, 0)
directrix: y = -2
An equation of the terminal side of an angle ? in standard position is given along with a restriction on x. Find the indicated trigonometric function value of ?. Do not use a calculator.2x + 7y = 0, x ? 0; Find cot ?.
A. 
B. - 
C. - 
D. 
Simplify the right-hand side of the equation.f(x) = 
A. 
B. 
C. 
D. 
Find the depreciation in the first partial year. Round to the nearest dollar.Cost: $8230Salvage: $630Life: 5 yearsMethod: Straight-lineAcquired: June 1
A. $1646 B. $960 C. $1520 D. $887