In how many ways can 7 different posters be arranged in a rrow under permutation

The party planning committee has to determine the number of tables needed for an upcoming event. if a square table can fit 8 people and a round table can fit 6 people, the equation 150 = 8x + 6y represents the number of each type of table needed for 150 people.

Select the correct answer and solve for y

The length of a rectangle plus its width is 24 cm. the area is 143 square cm. what are the length and width of the rectangle?