Which of the following is the equation of a line perpendicular to the line y[= -10x +1, passing through the point (5,7)

A. 1/10x-y= -13/2
B -1/10x-y=13/2
C 1/10x+y= -13/2
D -1/10x+y= -13/2

Which system of linear inequalities is represented by the graph?

If 30 lb of rice and 30 lb of potatoes cost ? $27.60? , and 20 lb of rice and 12 lb of potatoes cost ? $15.04? , how much will 10 lb of rice and 50 lb of potatoes? cost?

Liz is shipping a package to her friend. the maximum weight of a medium flat-rate box is 20 pounds, including the box which weighs 6 ounces. write and solve an inequality to describe the possible weight in pounds, w, of the contents that liz will ship to her friend if she must use a medium flat-rate box. use the drop-down menus to explain your answer.