?In a scale drawing, 1/4" represents 10 miles. Which of the following is true?
A. ?An inch represents 20 miles.
B. 6 miles is represented by 1/8".
C. 3 miles is represented by 1/16"
D. ?4 miles is represented by 1/10"
E. ?5 miles is represented by 1/6".
Answer: D
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Multiply.(3x3 + 7)(3x3 - 7)
A. 9x2 + 42x - 49 B. 9x6 - 42x - 49 C. 9x6 - 49 D. 9x3 - 49
Solve the problem.A mechanic uses on average 
gallon(s) of gear lube to service each tractor differential. Find the number of tractors that can be serviced with 16 gallons of gear lube.
A. 12
tractors
B. 4 tractors
C. 64 tractors
D. 20 tractors
Graph the quadratic function using its vertex, axis of symmetry, and intercepts.f(x) = 3x2 - 6x + 6
A. vertex (-1, 3)
intercept 
B. vertex (1, 3)
intercept 
C. vertex (-1, 3)
intercept (0, 6)
D. vertex (1, 3)
intercept (0, 6)
Solve the given equation or inequality. If an equation is given, then write the solution set in set notation. If an inequality is given, then write the solution set in interval notation.
+ 0.1 ? 0.6
A. {15, 20} B. (15, 20) C. (-?, 15] ? [20, ?) D. (-?, 15] ? [20, ?)