Describe the behavior of the function's graph at its x-intercepts.f(x) = (x - 1)(x + 7)
A. Does not cross at (1, 0) or (-7, 0)
B. Crosses at (1, 0) and (-7, 0)
C. Does not cross at (-1, 0) or (7, 0)
D. Crosses at (-1, 0) and (7, 0)
Answer: B
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Assume triangle ABC has standard labeling. Determine if AAS, ASA, SSA, SAS, or SSS is given, and decide if the law of sines or the law of cosines should be used to solve the triangle.a, b, and c
A. ASA; law of sines B. SSS; law of sines C. SSA; law of cosines D. SSS; law of cosines
Solve the problem.A study was conducted to compare the average time spent in the lab each week versus course grade for computer students. The results are recorded in the table below. Use the equation of the least squares line to predict the grade of a student who spends 14 hours in the lab. Number of hours spent in lab (x) Grade (percent) (y) 10 96 11 51 16 62 9 58 7 89 15 81 16 46 10 51
A. 65.4% B. 62.6% C. 58.6% D. 74.6%
Answer the question.There is a commutative property for both addition and multiplication. Is there a commutative property for subtraction? If so, state the property.
A. Yes. x - y = y - x B. No.
Factor.x4 - 256
A. (x2 - 16)(x2 - 16) B. prime C. (x2 + 16)(x2 + 16) D. (x2 + 16)(x + 4)(x - 4)