Factor the expression by removing the greatest common factor.81x9y9 + 81x3y6 + 54x5y3
A. 27x3(3x6y9 + 3y6 + 2x2y3)
B. 27(3x9y9 + 3x3y6 + 2x5y3)
C. 27x3y3(3x6y6 + 3y3 + 2x2)
D. No common factor
Answer: C
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Solve the problem.A surveyor standing 70 meters from the base of a building measures the angle to the top of the building and finds it to be 39°. The surveyor then measures the angle to the top of the radio tower on the building and finds that it is 48°. How tall is the radio tower?
A. 7.56 meters B. 11.09 meters C. 7.97 meters D. 21.06 meters
Solve by graphing.During the month of January 1997, the depth of snow y (in inches) at the base of one ski resort could be approximated by the linear equation 
where x is the number of days since December 31st. Graph the equation and use the graph to estimate the depth of snow on January 29th. 
A. 40 inches B. 16 inches C. 11 inches D. 19 inches
Use both properties of equality to solve the equation.-32 = 5x + 3
A. -40 B. -7 C. 9 D. -36
Factor the GCF out of the given expression.x(3x + 2) - 6(3x + 2)
A. (x - 6)(3x - 2) B. (x - 6)(3x + 2) C. (x + 6)(3x - 2) D. (x + 6)(3x + 2)