Write the function without radicals by using fractional exponents.y = 
- 
A. y = x2/3 - (7x)1/2
B. y = x2/3 - 7x1/2
C. y = x3/2 - 7x1/2
D. y = x1/3 - (7x)1/2
Answer: A
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Solve the problem.A rare baseball card was sold in 1990 for $215,000. The card was then resold in 1998 for $491,000. Assume that the card's value increases exponentially, and find an exponential function V(t) that fits the data. (Round decimals to three places.)
A. V(t) = 215,000e0.775t, where t is the number of years after 1990. B. V(t) = 215e0.775t, where t is the number of years after 1990. C. V(t) = 215,000e0.103t, where t is the number of years after 1990. D. V(t) = 215e0.103t, where t is the number of years after 1990.
Determine the vertex of the graph of f.f(x) = 2x2 + 8x + 13
A. (2, -5) B. (5, -2) C. (-5, 2) D. (-2, 5)
Solve the equation.
x = 
A. 
B. 
C. {4}
D. {-4}
Solve the problem.A hotel manager predicted an average occupancy rate of 
during the slow season. The occupancy rate turned out to be 0.60. Was the manager better off or worse off than he expected to be?
A. Better off B. Worse off