Translate to a proportion and solve. 66
% of what is 90?
A. 13.5
B. 135
C. 60
D. 1350
Answer: B
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Decide whether the ordered pair is a solution of the given system.(4, -2)x + y = -6x - y = -2
A. Yes B. No
State the phrase as a mathematical expression. Use x to represent the variable.The quotient of a number and nine
A. 9 + x
B. 
C. 9 - x
D. 9x
Solve the system by substitution.y = x2 - 6x + 9x + y = 3
A. (2, 1), (3, 0) B. (-2, 5), (-3, 6) C. (2, 5), (3, 0) D. (3, 0)
Solve.A costume jewelry company wants to reduce the cost of producing beads for necklaces. The beads are cylindrical in shape with height h and radius r. The company wants to reduce the size of the beads by 11%. If the company reduces only the radius of the beads, what must the new radius R be? (Note: the formula for the volume of a cylinder is 
Round to two decimal places.
A. R = 0.89r B. R = 0.11r C. R = 0.94r D. R = 0.94?rh