There are several types of tiles used in the design of a tiled floor. One type has four sides equal in length, but there are no right angles in the tile. What type of tile could this be?

Dylan and dusty plan to take weekly surfing lessons together. if the 2-hour lessons are $20 per person and they plan to spend $100 each on new surfboards, what is the maximum number of lessons the two can take if the total amount spent for lessons and surfboards is at most $480?

Twice the sum of a number and 4 is equal to three times the difference of the number and 7. find the number.

In which direction does the left side of the graph of this function point? f(x) = 3x3 - x2 + 4x - 2