Question 25 of 27 The pressure exerted by a certain liquid at a given point varies directly as the depth of the point beneath the surface of the liquid. The pressure at 50 feet is 100 pounds per square inch. What is the pressure at 30 feet?

c) \( \sqrt[3]{729} \cdot 4^{2}-\sqrt{49} \cdot 5^{0} \cdot 1^{3} \)

Simplify. \( 9^{\frac{3}{2}} \)

1a. Calculate the next two terins of each of the following sequences \( \begin{array}{ll}\text { (a) } 11,8,5, \ldots & \text { (d) } 4,9,14, \ldots \\ \text { (c) } 3 \frac{1}{2}, 3 \frac{1}{2}, 7,5,10 \frac{1}{2}, \ldots & \text { (e) } 1,5,9,13, \ldots\end{array} \)

The retail flat rate in dollars for first-class mail weighing up to 5 ounces could be computed by the piecewise-constant function \( f \), where \( x \) is the number of ounces. (a) Evaluate \( f(1.1) \) and \( f(4) \). Interpret your results. (b) Sketch a graph of \( f \). What is the domain of \( f \) ? What is the range of \( f \) ?

Which of the following is the value of \( \log 10^{20} \) ? (1 point) \( \frac{1}{2} \) 2 200 20