For what value of x will the function f(x) = -3(x - 10)(x - 4) have a maximum value? Find the maximum value.
Choose the correct choice.
A) 9	B) 18	C) 27	D) 36	E) 45
f(x) = -3(x - 10)(x - 4) = -3x2*square* + 42x - 120 : expand and obtain a quadratic function   h = -b/2a = -42/-6= 
<gadget id="calculator">-42/-6</gadget>
<output>7</output>
7 : h is the value of x for which f has a maximum value   f(h)= f(7) = 27 : maximum value of f.   correct answer 27
<result>C</result>
For what value of x will the function f(x) = -3(x - 10)(x - 4) have a maximum value? Find the maximum value.