Simplify, if possible.
A. 
B. 5x - 1
C. 
D. 
Answer: A
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Find the length and direction (when defined) of u × v.u = 4i + 2j + 8k, v = -i - 2j - 2k
A. 180; 
i + 
j + 
k
B. 180; 
i + 
k
C. 6
; 
i + 
k
D. 6
; 
i - 
k
A function of x is depicted in the graph. Find all x-values that satisfy the given condition.f(x) = 1
A. 0 B. -2 C. 2 D. -1
Solve the problem.Every hour, the population of a certain country increases by about 6192. If this country's death rate is 2037 deaths per hour, what is this country's (hourly) birth rate?
A. 5074 births per hour B. 7731 births per hour C. 8229 births per hour D. 4155 births per hour
Solve the problem. Round your answer to the nearest tenth unless indicated otherwise.Carol and Lu Yi carry a total of 5.5 liters of water as they begin a day hike. How many gallons of water are they carrying, to the nearest tenth?
A. 5.2 gal B. 20.8 gal C. 1.4 gal D. 5.8 gal