Answer:
A manufacturer sells widgets for $3.25 each
They charge a flat shipping rate on all orders. An order of 15 widgets costs $53.75
Explanation:
we are given the linear relationship between the cost of an order of widgets and the number of widgets ordered

where
y is the cost of an order of widgets
x is the number of widgets ordered
now, we can compare it with point slope form of line

we can find m ,x1,y1


we know that slope is rate of change
so, we get
charge of one widget is $3.25
number of widget =15 whose costs is $53.75
so,
A manufacturer sells widgets for $3.25 each
They charge a flat shipping rate on all orders. An order of 15 widgets costs $53.75