Find the real zeros, if any, of each quadratic function using the quadratic formula. List the x-intercepts, if any, of the graph of the function. f(x) = 4x2 - 25x - 21
A. x = - 
, x = 14
B. x = - 
, x = 7
C. x = -3, x = 7
D. x = 
, x = -7
Answer: B
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Solve the problem.Bob wants to fence in a rectangular garden in his yard. He has 62 feet of fencing to work with and wants to use it all. If the garden is to be x feet wide, express the area of the garden as a function of x.
A. A = 33x2 - x B. A = 30x - x2 C. A = 31x - x2 D. A = 32x - x2
?The population P ( in thousands) of Japan from 1980 through 2010 can be modeled by 
where t is the year, with 
corresponding to 1980. Determine the population growth rate,
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Solve the equation. Express radicals in simplest form.(2m - 3)2 = 81
A. {3, -6} B. {6, -12} C. {12, -6} D. {6, -3}
Use a graphing utility to graph the function.
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A. ?
B. ?
C. ?
D. ?
E. ?