y = 248 - 390x
Which of the following values of x gives the greatest value of y in the equation above?
Pick one.
A) 200 B) 100 C) 0.5 D) -2 E) -1
Clearly, the negative value of x will result in maximum value of y.   Answer is -2
<result>D</result>
y = 248 - 390x
Which of the following values of x gives the greatest value of y in the equation above?