Simplify the sum.(3x + 4) + (9x - 7)
A. 12x - 3
B. 15x
C. -6x + 11
D. 12x + 11
Answer: A
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Evaluate the expression using the given values.b2 - 4ac ; b = -6, a = 3, c = 6
A. -36 B. -42 C. -46 D. -32
Solve the problem.Persons taking a 30-hour review course to prepare for a standardized exam average a score of 620 on that exam. Persons taking a 70-hour review course average a score of 770. Find a linear function S(t), which fits this data, and which expresses score as a function of time.
A. S(t) = 3.375t + 511.5 B. S(t) = 3.75t + 507.5 C. S(t) = -3.75t + 507.5 D. S(t) = 3.375t - 511.5
Provide an appropriate response.Which of the following are reduced matrices?A = 
B = 
C = 
D = 
Fill in the blank(s) with the appropriate word(s).
Provide an appropriate response.Choose the expression that is equivalent to the following: (6x + 4y)(6y2)
A. (6y2)(6x + 4y) B. (6x + 6y2)(4y) C. (6x) + (4y)(6y2) D. 6x + (4y + 6y2)