(a) Find an exponential function of the form \( f(t)=y_{0} b^{t} \) to model these data in which \( t=0 \) corresponds to 2004 . \( f(t)=31.22 \cdot(1.072)^{t} \) (Use integers or decimals for any numbers in the expression. Round to the nearest thousandth as needed.) (b) If the model remains accurate, what was the predicted rent per square foot in 2016 ? If the model remains accurate, the predicted rent per square foot in 2016 was \( \$ \square \). (Round to the nearest hundredth as needed.)

20. (02-10-65) \( y=\sqrt{\left(5-x^{\frac{2}{3}}\right)^{3}} \) egri chiziqqa \( M(1 ; 8) \) nuqtada urinma o'tkazilgan. Bu urinmaning ko- ordinata o'qlari orasidagi kesmasi uzunligini top- ing. \( \begin{array}{llll}\text { A) } 5 \sqrt{5} & \text { B) } 10 & \text { C) } 5 & \text { D) } 7 \sqrt{3} \\ \text { E) } 5 \sqrt{7}\end{array} \)

21. (03-2-23) \( y=\ln x \) funksiya grafigiga o'tkazilgan urinma koordinata boshidan o'tadi. Shu urinman- ing tenglamasini yozing. \( \begin{array}{lll}\text { A) } y=x & \text { B) } y=2 x & \text { C) } y=e x \\ \text { D) } y=\frac{z}{e} & \text { E) } y=3 x & \end{array} \)

3. (20б) Постройте область: \( \left\{\begin{array}{l}1<|z-3-i| \leq 2 \\ \arg z \geq-\frac{\pi}{6}\end{array}\right. \)

1. In electricity, the impe circuit is given by the \( \sqrt{R^{2}+\left(\omega L-\frac{1}{\omega C}\right)^{2}} \) a) Make \( C \) the subject of b) Find \( C \) when \( Z=120 \), \( 310 \quad \) and \( L=0.35 \).

4. (a) Sketch the curve with equation \[ y=a^{-x}+4 \]