Solve the problem.The perimeter of a rectangle is 20 cm. The length is 6 cm longer than the width. What are the length and width of the rectangle?
A. Length: 8 cm; width: 2 cm
B. Length: 10 cm; width: 4 cm
C. Length: 6 cm; width: 2 cm
D. Length: 11 cm; width: 5 cm
Answer: A
Mathematics
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Find a positive value of the given variable so that the trinomial is factorable.5x2 + bx + 1; b = ?
A. 4 B. 6 C. 7 D. 5
Mathematics
Subtract and check.
A. 252,753 B. 252,763 C. 253,753 D. 262,763
Mathematics
Solve the equation and express the solution in exact form.log (x + 3) = 1 - log x
A. {-2} B. {-2, 5} C. {2} D. {-5, 2}
Mathematics
Use the table to solve the problem.The cost in dollars of driving a certain make and model of car for x miles is given by the function f. A numerical representation of f is given in the following table. 
If the cost is $2.16, how many miles have been driven?
A. 5 miles B. 6 miles C. 4 miles D. 3 miles
Mathematics