Write an equation that expresses the relationship. Use k for the constant of proportionality.q varies directly as the square of r and inversely as s.
A. q = k + r2 - s2
B. q = 
C. q = 
D. q = kr2s
Answer: B
Mathematics
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Find the inverse of the function.f(x) = 
, x ? -7
A. f-1(x) = x2 - 7, x ? 0 B. f-1(x) = x2 - 49, x ? 0 C. f-1(x) = -x2 + 7, x ? 0 D. Not a one-to-one function
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Solve the problem.Frank can type a report in 3 hours. James takes 7 hours to type it. How long will it take the two of them typing together?
A. 
hr
B. 
hr
C. 
hr
D. 
hr
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Refer to the figure. 
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Simplify the expression.
?
Fill in the blank(s) with the appropriate word(s).
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