Determine what signs on values of x and y would make the statement true. Assume that x and y are not 0.
> 0
A. x and y must be positive.
B. x and y have the same sign.
C. x and y have different signs.
D. x and y must be negative.
Answer: B
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Perform the indicated operation.
- 
A. 
B. 
C. 
D. 
Solve the problem.In one U.S. city, the quadratic function 
models the median, or average, age, y, at which men were first married x years after 1900. In which year was this average age at a minimum? (Round to the nearest year.) What was the average age at first marriage for that year? (Round to the nearest tenth.)
A. 1961, 23.5 years old B. 1961, 50.4 years old C. 1953, 36 years old D. 1936, 50.4 years old
Provide an appropriate response.For a certain system of two linear equations, the solution set is {-3, -10}, and 
Find the values of Dx and Dy.
A. Dx = -81; Dy = -270
B. Dx = -3; Dy = -10
C. Dx = - 
; Dy = - 
D. Dx = -270; Dy = -81
Complete.15 km2 = _______ m2
A. 150,000 B. 1,500,000 C. 15,000 D. 15,000,000