3 Function \( f \) gives the temperature on a certain day, in degrees Celsius, \( t \) hours after midnight. Use function notation to write an equation, inequality, or expression for each statement. a. the temperature at 12 p.m. b. The temperature was the same at 9 a.m. and at 4 p.m. c. It was warmer at 9 a.m. than at \( 60 . \mathrm{m} \). d. \( T \) hours after midnight, the temperature was 24 degrees Celsius.

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

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 \( f \) ?

b) \( (-3)^{2}= \)

Which of the following is equal to \( \log \sqrt[4]{1000} \) ? ( 1 point) \( \begin{array}{l}\frac{3}{4} \\ -\frac{4}{3} \\ -\frac{3}{4}\end{array} \)

Consider the following function. \[ f(x)=1-x^{2 / 3} \] Find \( f(-1) \) and \( f(1) \) \( f(-1)=\square \) \( f(1)=\square \)