Provide an appropriate response.Round 87.1256 to the nearest thousandth.
A. 87.136
B. 87.126
C. 87.116
Answer: B
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Use identities to find the exact value of the expression.tan 80° - 
A. Undefined B. 0 C. 1 D. 80
Solve the problem using your calculator.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 linear regression to find a linear function that predicts a student's course grade as a function of the number of hours spent in lab. Number of hours spent in lab Grade (percent) 10 96 11 51 16 62 9 58 7 89 15 81 16 46 10 51
A. y = 1.86 + 88.6x B. y = 0.930 + 44.3x C. y = 44.3 + 0.930x D. y = 88.6 - 1.86x
Factor completely.3x2 - 9xy - 12y2 = 3( 
)( 
)
A. x - y, x + 4y B. x - 3y, x + 4y C. x + 3y, x - 4y D. x + y, x - 4y
Use the factor theorem to decide whether or not the second polynomial is a factor of the first.7x3 + 31x2 - 19x + 5; x + 5
A. Yes B. No