y = 248 - 343x
Which of the following values of x gives the greatest value of y in the equation above?
Choices
A) 200	B) 100	C) -7	D) 0	E) 10
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 -7
<result>C</result>
y = 248 - 343x
Which of the following values of x gives the greatest value of y in the equation above?