Write the expression with only positive exponents and evaluate if possible. Assume all variables represent nonzero real numbers.
A. 
B. 
C. 
D. 18x(x + 6)
Answer: B
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Solve for the unknown quantity on the following equations:
3x 1 4 2 a. ÄÄ + Ä = 9 c. ÄÄÄÄÄÄÄ + Ä = 3 4 4 (x + 1) 3 2 1 1 3 b. Ä + Ä = 4 d. Ä - Ä = 2 x 3 a b
Solve the problems.In a recent International Gymnastics competition, the U.S., China, and Romania were the big winners. If the total number of medals won by each team are three consecutive integers whose sum is 84 and the U.S. won more than China who won more than Romania, how many medals did each team win?
A. U.S.: 30 medals; China: 29 medals; Romania: 28 medals B. U.S.: 86 medals; China: 85 medals; Romania: 84 medals C. U.S.: 27 medals; China: 26 medals; Romania: 25 medals D. U.S.: 29 medals; China: 28 medals; Romania: 27 medals
Solve the problem.If the three lengths of the sides of a triangle are known, Heron's formula can be used to find its area. If a, b, and c are the three lengths of the sides, Heron's formula for area is: A = 
where s is half the perimeter of the triangle, or s = 
(a + b + c).Use this formula to find the area of the triangle if a = 4 cm, b = 10 cm and c = 12 cm. 
A. 8
sq. cm
B. 3
sq. cm
C. 3
sq. cm
D. 3
sq. cm
Convert the units.148 mg = 
g
A. 0.148 g B. 14,800 g C. 1.48 g D. 148,000 g