Tom thomas took tennis lessons. he traveled 12 miles one way at an average cost of $0.42 per mile. his racket cost $94, balls cost $12.50, shoes cost $44.50, his warm-up was $34, and his shorts were $19.95. he paid 5% sales tax on his equipment, clothes, and warm-up. tom also paid $20.00 per lesson for 12 lessons. he only had to pay for the warm-up one time. including the cost of round trip travel, what is the total cost?

1) is right

step-by-step explanation:

answer: - (a)

(b) 88 seats

step-by-step explanation:

given: in an auditorium, there are 22 seats in the first row and 28 seats in the second row.

thus first term=

second term=

the number of seats in a row continues to increase by 6 with each additional row.

⇒d= 6

a) given formula :

b)   let the number of seats (n) = 12

substitute n=12 in the explicit rule formed in (a)

∴there are 88 seats in 12 rows.