A test was marked out of 30. The mean mark was 23 and the standard deviation 3. To change the marks to a percentage, Mrs Low multiplies each mark by 3 and adds 10. Find the new mean and standard deviation.

Abank gives 6.5% interest per year. what is the growth factor b in this situation?

Student price tickets to a movie are $1 and non student tickets are $2 . 350 tickets are sold and the total amount made is $450. there were 250 student tickets sold . true or false .

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.