Solve the problem.If a number is tripled and then added to itself, the result is the same as the number doubled plus 22. Find the number
A. 33
B. 55
C. 11
D. 22
Answer: C
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Find projv u.v = 2i - 2j - 4k, u = 5i - 12k
A. 
i - 
k
B. 
i - 
j - 
k
C. 
i - 
k
D. 
i - 
j - 
k
Write a description of the shaded region using the symbols A, B, C, ?, ?, -, and ' as needed.
A. B - (A ? C) B. B ? (A ? C)' C. A' ? C' ? B D. (B - A) ? C
Solve.Suppose economists use as a model of a country's economy the function N(x) = 0.6898x + 5.9243,where N represents the consumption of products in billions of dollars and x represents disposable income in billions of dollars. a. Identify the dependent and independent variables.b. Evaluate N(8.67)and explain what it represents.
A. a. The dependent variable is the number of billions of dollars, N, and the independent variable is the disposable income in billions of dollars. b. N(8.67) = $3.8 billion; According to the model, the number of billions of dollars for the consumption of products is $3.8 billion. B. a. The dependent variable is the number of billions of dollars, N, and the independent variable is the disposable income in billions of dollars. b. N(8.67) = $11.9 billion; According to the model, the number of billions of dollars for the consumption of products is $11.9 billion. C. a. The dependent variable is the number of billions of dollars, N, and the independent variable is the disposable income in billions of dollars. b. N(8.67) = $4.0 billion; According to the model, the number of billions of dollars for the consumption of products is $4.0 billion. D. a. The dependent variable is the number of billions of dollars, N, and the independent variable is the disposable income in billions of dollars. b. N(8.67) = $5.2 billion; According to the model, the number of billions of dollars for the consumption of products is $5.2 billion.
Solve the equation. Express radicals in simplest form.x2 = 
A. 
B. 
C. 
D. 