Graham buys 15 pens for $12.75. What is the unit price per pen? Later, at another store, Graham finds 20 of the same pens priced at $17.40. Which offer has the lower unit price? Explain.

Oscar and julie ashton are celebrating their 15th anniversary by having a reception hall. they have budgeted $4,500 for their reception. if the reception hall charges a $90 cleanup fee plus & 36 per person, find the greatest number of people that they may invite and still stay within their budget.

What percent of the circle below is shaded?

Complete the solution of the equation. find the value of y when x equals to 6 4x+y=20