Solve the problem.The paired data below consist of the temperatures on randomly chosen days and the amount a certain kind of plant grew (in millimeters). The following regression equation is obtained: 
where x is temperature and y is growth in millimeters. Predict the growth of a plant if the temperature is 75. Round your answer to two decimal places.
A. 31.03
B. 30.43
C. 28.85
D. 31.63
Answer: B
Mathematics
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Factor by grouping.18r2 + 45ry - 2xr - 5xy
A. (2r + 5y)(x - 9r) B. (2r + 5y)(9x - r) C. (5r + 2y)(9r - x) D. (2r + 5y)(9r - x)
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Subtract in the indicated base.FE116 - 1216
A. FDF16 B. FCF16 C. EFD16 D. FDC16
Mathematics
Subtract in the indicated base.11,0002 - 1112
A. 10,0112 B. 11,0012 C. 10,0012 D. 10,0002
Mathematics
Multiply.(-20)(-7)
A. 140 B. 13 C. -13 D. -140
Mathematics