Express in terms of x, the value in cents of x lbs. of 40 cent cookies and (30-x) pounds of 50 cent cookies.
2 answers
how to find a area?
40 x +50(30-x)
40 x + 1500 -50 x
1500 - 10 x
40 x + 1500 -50 x
1500 - 10 x