y = 248 - 198x
Which of the following values of x gives the greatest value of y in the equation above?
Answers.
A) 200  B) 100  C) 0.5  D) -5  E) 4
Clearly, the negative value of x will result in maximum value of y.   Don't even look at the rest of the answer choices as only one negative value is being present.   Answer is -5
<result>D</result>
y = 248 - 198x
Which of the following values of x gives the greatest value of y in the equation above?