Find the product.(x + 1)(x - 1)
A. x2 + 2x - 1
B. x2 - 2x - 1
C. x2 - 1
D. x2 - 2
Answer: C
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Apply Green's Theorem to evaluate the integral.
(5y + x) dx + (y + 2x) dyC: The circle (x - 6)2 + (y - 1)2 = 4
A. -12? B. -12 C. 12? D. -72
Write the number in words.500,127
A. five hundred one thousand, twenty-seven B. five hundred thousand, one hundred twenty-seven C. fifty thousand, one hundred twenty-seven D. five thousand, one hundred twenty-seven
Solve the problem.The amount of particulate matter left in solution during a filtering process is given by the equation 
, where n is the number of filtering steps. Find the amounts left for 
and 
. (Round to the nearest whole number.)
A. 900, 28 B. 900, 225 C. 900, 3600 D. 1800, 225
Graph the given equation. Find the vertex, axis of symmetry, and intercepts.y = x2 + 2x - 3
A. vertex: (1, - 4)
axis of symmetry: x = 1
x-intercepts: -1 and 3; y-intercept: -3
B. vertex: (- 1, - 4)
axis of symmetry: x = - 1
x-intercepts: -3 and 1; y-intercept: -3
C. vertex: (- 1, 4)
axis of symmetry: x = - 1
x-intercepts: -3 and 1; y-intercept: 3
D. vertex: (1, 4)
axis of symmetry: x = 1
x-intercepts: -1 and 3; y-intercept: 3