Factor completely.7x2 - 21xy - 28y2
A. 7(x + y)(x - 4y)
B. prime
C. (7x - 7y)(x + 4y)
D. 7(x - y)(x + 4y)
Answer: A
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Provide an appropriate response.True or false? If a fraction with denominator 
must be written as an equivalent fraction with denominator 
then the original fraction must be multiplied by 
in both the numerator and the denominator.
A. True B. False
Find the value of the exponential expression.24
A. 6 B. 16 C. 8 D. 5
There were many names mentioned in this section. Give a brief description for the person named in problem, telling how they were related to the development of computers. ? Douglas Engelbart ?
A. 1st working computer, ENIAC B. founder of Microsoft C. invented computer mouse D. cofounder of Apple E. founder of I.B.M computers
Find the exact value of the expression or state that it does not exist.sin(tan-1 2)
A. 2
B. 
C. 5
D. 