The annual budget of a certain college is to be shown on a circle graph. If the size of each sector of the graph is to be proportional to the amount of the budget it represents, how many degrees of the circle should be used to represent an item that is 15 percent of the budget?

If positive integers x and y are not both odd, which of the following must be even?

If r and s are positive integers such that (~$2^r$~)(~$4^s$~) = 16, then 2r + s =

If the perimeter of a rectangular garden plot is 34 feet and its area is 60 square

feet, what is the length of each of the longer sides?

A certain population of bacteria doubles every10 minutes. If the number of bacteria in the population initially was~$ 10^4$~, what was the number in the population 1 hour later?

In the figure above, the sum of the three numbers in the horizontal row equals the  product of the three numbers in the vertical column. What is the value of xy ?

The number of rooms at Hotel G is 10 less than twice the number of rooms at Hotel H. If the total number of rooms at Hotel G and Hotel H is 425, what is the number of rooms at Hotel G ?

At the opening of a trading day at a certain stock exchange, the price per share of stock K was $8.If the price per share of stock K was $9 at the closing of the day, what was the percent increase in the price per share of stock K for that day?