91.

1. exponential

2. linear

3. exponential

4. linear

93.

1. Decay

2. $2.24

3. The price decreases quickly in the beginning, but then decreasing the price becomes more difficult as time goes on.

95.

1. 176.6°C; 148.1°C

2. 5 hours

3. 25°C

97. $220,262

99. $35,496.43

101. 16.81%

103. $0.1357{\text{ mm}}^2$

105. 3.9%

107. Bank A; Javier will save $20.72 by choosing Bank A over Bank B

109. 59 minutes