Use the given values of the variables to find the value of the expression.7x - 6y for x = -2, y = 3
A. -32
B. 3
C. -2
D. 33
Answer: A
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Add.(8x2 + 8x - 4xy - 4) + (9x2 - 3x + 3xy - 1)
A. 22x2 - 6xy B. 17x2 + 5x - xy - 5 C. 22x2 - xy - 5 D. 17x4 + 5x2 - x2y2 - 5
Solve the problem.Given the velocity and initial position of a body moving along a coordinate line at time t, find the body's position at time t.v = 
sin 
, s(?2) = 2
A. s = -2 cos 
+ 3.3073
B. s = -2 cos 
+ 4
C. s = -2 cos 
+ 8.2134
D. s = 2 cos 
+ 4
Answer the problem with a sentence containing the requested measurement.In a pole vaulting competition, Jesse vaulted 3.5 meters. Express this number in centimeters.
A. In a pole vaulting competition, Jesse vaulted 350 centimeters. B. In a pole vaulting competition, Jesse vaulted 0.35 centimeter. C. In a pole vaulting competition, Jesse vaulted 35 centimeters. D. In a pole vaulting competition, Jesse vaulted 3500 centimeters.
Describe the strength and direction of the linear correlation.Each of several people of various ages was asked to choose his or her favorite number (1-100). Their ages and numbers are recorded in the following table:
A. Little or no linear correlation B. Weak negative linear correlation C. Strong positive linear correlation D. Strong negative linear correlation