Question 178574
Note: an expression does NOT have an equals sign



a) You have the right <i>equation</i>, but they want an <i>expression</i> (ie they do NOT want an equals sign)


So the <i>expression</i> is 3x+2500



b)


Since the average cost can be found "by dividing total costs by number of animals", this means that the average cost is simply:



{{{(3x+2500)/x}}}



So the <i>expression</i> that gives the average cost per animal is {{{(3x+2500)/x}}}



So it looks like you're on the right track, but forgot that they wanted expressions as answers.