Express the number in scientific notation.870,000
A. 8.7 × 105
B. 8.7 × 104
C. 8.7 × 10-4
D. 8.7 × 10-5
Answer: A
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Perform the indicated operations and simplify the result. Leave the answer in factored form.
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A. 
B. 
C. 
D. 
Determine the slope and the y-intercept.f(x) = -4x + 5
A. Slope 5, y-intercept (0, -4) B. Slope 4, y-intercept (0, 5) C. Slope -4, y-intercept (0, 5) D. Slope 5, y-intercept (0, 4)
Find the vertex, focus, and directrix of the parabola with the given equation.(y + 4)2 = 12(x + 1)
A. vertex: (-1, -4) focus: (-4, -4) directrix: x = 2 B. vertex: (-4, -1) focus: (-1, -1) directrix: x = -7 C. vertex: (1, 4) focus: (4, 4) directrix: x = -2 D. vertex: (-1, -4) focus: (2, -4) directrix: x = -4
Find the expected value.A car agency has found daily demand to be as shown in the table.
Find the expected number of customers.
A. 9 B. 12 C. 10 D. 2