Write the number in standard form. 7 × 10-8
A. 0.00000007
B. -700,000,000
C. 0.000000007
D. 0.0000007
Answer: A
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The question(s) that follow refer to the problem of finding the minimum spanning tree for the weighted network shown below.
Give the weight of the MST.
A. 12.5 B. 11.9 C. 12.8 D. 10.8 E. 11.3
Solve the initial value problem for y as a function of x.x 
= 
, x ? 4, y(4) = 0
A. y = 
- x + 4
B. y = 
C. y = 4
D. y = 4 ln 
Determine if the graph of the function is concave up or concave down.y = 4(x + 1)2 + 2
A. Concave up B. Concave down
The table shows the fraction of the world's surface land area taken up by each continent. Use the table to answer the question. Write your answer in simplest form. Continent Fraction of World's Surface Land Area North America 
South America 
Europe 
Africa 
Asia 
style="vertical-align: -17.0px;" /> Australia 
Antarctica 
Find the fractional part of the world's land area within the continents of North America and Europe.
A. 
B. 
C. 
D. 