Factor by grouping.x2 + 6x + xy + 6y
A. (x + 6)(x + y)
B. (x - 6)(x + y)
C. (x - 6)(x - y)
D. (x + 6)(x - y)
Answer: A
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Solve the problem.Since the enactment of a smoking ban in a particular city, the number of smokers has slowly declined. Statistics show that the number of smokers in this city has decreased for four consecutive months by 3%, 2%, 5% and 2%. What was the overall percentage decrease in the number of smokers during this four month period?
A. 12% B. 11.5% C. 12.5% D. 88.5% E. 3%
Convert the measurement as indicated. Round to the nearest tenth, if necessary.60 kg to pounds
A. 27.0 lb B. 63.6 lb C. 132.0 lb D. 152.4 lb
Add or subtract as indicated. Write the answer in simplest form.
+ 
+ 
A. 
B. 
C. 
D. 
Multiply.-2z2(8z2 + 4z - 6)
A. -16z4 - 8z2 + 12 B. 6z4 + 2z - 8 C. -16z4 - 8z3 + 12z2 D. -16z4 - 8z + 12