Explain why the average temperature change was -5 per hour

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 is the radius of the cone in the diagram? round your answer to the nearest whole number

Using only the digits 5, 6, 7, 8, how many different three digit numbers can be formed if no digit is repeated in a number?