Write the number in scientific notation.819,000
A. 8.2 × 10-5
B. 8.2 × 105
C. 8.2 × 104
D. 8.2 × 10-4
Answer: B
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Find an equation for the line tangent to the given curve at the indicated point.x2 + y2 - 2x + 4y = 8 at (4, 0)
A. y = 
(x - 4)
B. y = 0
C. y = - 
(x - 4)
D. x = 4
Use the table or graph to answer the question.Company MRK declared profits of $3,000,000 for the year 2012. The profits were from its three groups (research, product, and consulting) as shown in the pie chart. The profits from the product group were further categorized as shown in the second pie chart. How much was the profit from appliances?
A. $900,000 B. $450,000 C. $600,000 D. $360,000
Multiply. Write the answer in simplest form.
? 
A. 
B. 
C. 
D. 
Write a direct variation equation, y = kx, that describes the graph. 
A. y = 
x
B. y = 
x
C. y = - 
x
D. y = - 
x