Find the length and direction (when defined) of u × v.u = - 
i + 
j + k, v = i + j + 2k
A. 2
; - 
i + 
j - 
k
B. 8; 
i - 
j - 
k
C. 2
; 
i + 
j - 
k
D. 8; 
i - 
j + 
k
Answer: C
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Solve the problem.In a local election, 38,100 people voted. This was a decrease of 5% less than the last election. How many people voted in the last election? Round your answer to the nearest whole number of people.
A. 40,105 people B. 36,195 people C. 36,286 people D. 40,005 people
Write the digit for the given place value in the whole number.1534hundredsones
A. hundreds 3 ones 4 B. hundreds 1 ones 5 C. hundreds 5 ones 3 D. hundreds 5 ones 4
Find the unknown side of the right triangle. Use a calculator or square root table when necessary and round to the nearest thousandth.
6 cm
A. 45 cm B. 22.5 cm C. 6.708 cm D. 4.5 cm
Graph the ellipse. Label the x- and y-intercepts.
+ 
= 1
A. x-intercepts: (-7, 0), (7, 0);
no y-intercepts
B. x-intercepts: (-7, 0), (7, 0);
y-intercepts: (0, 2), (0, -2)
C. no x-intercepts;
y-intercepts: (0, 2), (0, -2)
D. x-intercepts: (-2, 0), (2, 0);
y-intercepts: (0, 7), (0, -7)