Factor when possible.21x3 - 7x
A. 7x(3x - 1)
B. 7x(3x2 - 1)
C. 7x(x2 - 3)
D. 7(3x3 - 1)
Answer: B
Mathematics
You might also like to view...
Find the area enclosed by the given curves.Find the area of the region in the first quadrant bounded on the left by the y-axis, below by the line 
above left by y = x + 4, and above right by y = - x2 + 10.
A. 
B. 
C. 
D. 15
Mathematics
Solve the problem.In Smithville, there were 225 teachers in 1990 and 321 teachers in 2000. Find the percent of increase in the number of teachers in Smithville during this time period. Round to the nearest tenth of a percent.
A. 42.7% B. 46.9% C. 29.9% D. 51.2%
Mathematics
Simplify the expression. Write answer with positive exponents.
A. 
B. -83
C. 8-3
D. 83
Mathematics
Divide and simplify.
÷ 
A. 
B. 
C. 
D. 
Mathematics