The first term in an arithmetic series is 100. the common difference is -4.

find an expression in terms of n. for the nth term of this series. give your answer in simplest form

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.