Simplify the expression.5(2x - 2) - 6(x - 1)
A. 4x - 4
B. 4x - 16
C. -20x - 4
D. 4x - 3
Answer: A
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If s denotes the length of the arc of a circle of radius r subtended by a central angle ?, find the missing quantity.r = 
feet, s = 16 feet, ? = ?
A. 
radians
B. 40 radians
C. 40°
D. 
°
Use the commutative or the associative property to complete the statement. State which property is used.7 + (2 + 6) = (7 + 
)+ 6
A. -2; commutative property B. 2; commutative property C. 2; associative property D. -2; associative property
Provide an appropriate response.Determine whether the following equation has real roots. If it has real roots, find them, otherwise say no real roots. 
+ 
= 1
Fill in the blank(s) with the appropriate word(s).
A number is given in decimal notation. Write the number in scientific notation.In a certain city, the subway system carried a total of 1,790,000,000 passengers.
A. 1.79 × 108 B. 1.79 × 109 C. 1.79 × 1010 D. 17.9 × 109