Write a formula for the function described.Function Y computes the number of square yards in x square feet.
A. Y(x) = 9x
B. Y(x) = 
C. Y(x) = x - 9
D. fY(x) = 
Answer: B
Mathematics
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True or false?A person who scored at the sixtieth percentile in a test scored higher than 300 people if 500 people took the test.
A. True B. False
Mathematics
Write the number in standard notation.6.21 × 105
A. 6,210,000 B. 621,000 C. 310.5 D. 62,100
Mathematics
Simplify the expression. Write the answer with only positive exponents. Assume that all variables represent positive real numbers.
A. 
B. 
C. 
D. 
Mathematics
Find all points where the function has any relative extrema or saddle points and identify the type of relative extremum.f(x, y) = e-(x2 + y2 - 8y)
A. Saddle point at (0, 4) B. Relative maximum at (0, 4) C. Relative maximum at at (0, 4) and relative minimum at at (0, -4) D. No relative extremum or saddle points.
Mathematics