Power usage is measured in kilowatt-hours, kWh. After 7 a. m., the power usage on a college campus increases at a rate of 21% per hour. Prior to 7 a. m., 15,040 kWh have been used. The university has a daily goal to keep their power usage less than or equal to 100,000 kWh. Which inequality can be used to determine the number of hours, t, after 7 a. m. when the power usage on campus will be less than or equal to 100,000?

Lindsay used two points, (x, y; ) and (+2.82), to find the equation of the line, y = mx + b, that passes through the points. y2-y, first, she used the definition of slope and determined that the value of mis x, - . given this information, which expression must represent the value of b?

On traditional maps, earth is represented in a flat plane, or by euclidean geometry. however, a globe is a more accurate model that comes from elliptical geometry. how does a globe represent the fact that there are no parallel lines in elliptical geometry? the equator is not parallel to any other latitudinal lines. the north and south poles are never connected by a geodesic. the geodesics connecting the north and south poles never intersect. the geodesics connecting the north and south poles intersect at both of the poles.

How can you check that you have correctly converted frequencies to relative frequencies?