Subtract.(r3 - 6rs + 8s2) - (3r3 + rs - 3s2)
A. -2r3 - 5rs + 11s2
B. -3r3 - 6rs + 5s2
C. -2r3 - 7rs + 5s2
D. -2r3 - 7rs + 11s2
Answer: D
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Provide an appropriate response.Which fraction is equivalent to 
and has a denominator of 28?
A. 
B. 
C. 
D. 
Find the area of the specified region.Shared by the cardioids r = 8(1 + sin ?) and r = 8(1 - sin ?)
A. 32(3? + 8) B. 16(5? + 8) C. 32(3? - 8) D. 1664
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). By using linear regression, the following function is obtained: 
where x is temperature and y is growth in millimeters. Use this function to predict the growth of a plant if the temperature is 64.
A. 28.10 B. 29.13 C. 28.62 D. 26.76
Solve the equation.
+ 5 = x
A. x = 2, 9 B. x = 9, 18 C. x = 9 D. x = 2