A theater has 35 seats in the first row. Each row has four more seats than the row before it. Which expression represents the number of seats in the nth row?

The length of a shadow of the building is 36m. the length of the pole, which is perpendicular to the ground, is 1.9m. the length of the pole's shadow is 1.52m. what is the height of the building?

1yd 1 ft = 1 1/12 1 1/3 1 1/2 1 1/6

Can someone me with #s 8, 9, and 11. with just one of the three also works. prove using only trig identities.