Anything would be appreciated!

a manufacturer can produce a color pen at a cost of $3. the color pens have been selling for $5 per pen and at this price, consumers have been buying 4,000 pens per month. the manufacturer is planning to raise the price of the pens and estimates that for each $1 increase in the price, 400 fewer pens will be sold each month. at what price should the manufacturer sell the pens to maximize the profit? what is the profit?

What aspects of lines have to be diffrent

Match the term on the left with its image or description on the right. match term definition diameter a) circle a and a line segment connecting points b and c which are on the circle. circumference b) circle a and a line segment connecting points b and c which are on the circle. radius c) a piece of the circumference of a circle secant d) two circles that share the same center. concentric circles e) the distance around a circle arc f) a segment between two points on a circle that passes through its center

Write the sentence as an equation. z plus 372 is equal to 160