3 - K/U a) Determine a formula that defines the arithmetic sequence 3, 12, 21, 30, .... b) State a formula that defines each term of any arithmetic sequence. A v B IE E PA U S X2 F + |3 - KU What is the 33rd term of the sequence 18, 11, 4, , ...?4 - K/U The 7th term of an arithmetic sequence is 53 and the 11th term is 97. Determine the 100th term. A v B E U S X2 E G C I + >4- App A doctor makes observations of a bacterial culture at fixed time intervals. The table below shows his first four observations. If the pattern continues, how many bacteria will be present at the 9th observation? Observation Number of Bacteria 5 120 IN 7 680 W 11 520 4 17 2804-App Terry invests $300 in a GIC (guaranteed investment certificate) that pays 6% simple interest per year. When will his investment be worth $732? A v B I U S X2 x2 F F 6- App An opera house has 27 seats in the first row, 34 seats in the second row, 41 seats in the third row, and so on. The last row has 181 seats. a) How many seats are in the 10th row? b) How many rows of seats are in the opera house