Provide an appropriate response.Factor by removing common factors after grouping: x2 - 6x - 2x + 12
A. (x - 6)(x + 2)
B. 2x(x - 6)
C. (x - 6)(x - 2)
D. (x - 3)(x - 4)
Answer: C
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Find the axis of symmetry of the parabola defined by the given quadratic function.f(x) = -x2 + 8x + 5
A. x = 4 B. x = 21 C. x = -4 D. x = 8
Provide an appropriate response.If A is a 6 × 9 matrix and A+ K = A, what can you say about K?
A. K is a 6 × 9 matrix and each of its entries is the negative of the corresponding entry of A. B. K is a 9 × 6 matrix and all entries of K are equal to 0. C. K is a 9 × 6 matrix and each of its entries is the negative of the corresponding entry of A. D. K is a 6 × 9 matrix and all entries of K are equal to 0.
Solve the problem.Mark's typing speed is 78 words per minute. How many words can he type in 58 minutes?
A. 4424 words B. 4524 words C. 4534 words D. 136 words
Simplify the expression by performing the indicated operations.5
+ 
? 5
A. 15
+ 25
B. 25
+ 15
C. 30
+ 50
D. 15
+ 25