Andrea bought tacos from a food truck and left a \( 25 \% \) tip of \( \$ 2.00 \). What was the price of Andrea's tacos, before tip? Shaw Calculator

30. Let \( A \) and \( B \) be two sets. If \( A \backslash B=\phi \), then which of the following is always true? \( \begin{array}{ll}\text { A. } B \backslash A=\phi & \text { C. } B \backslash A=A \backslash B \\ \text { B. } A \cap B=B-A & \text { D. } A \cup B=B\end{array} \)

\( \tan x(2 \sin x-\sqrt{3})=0 \) Write your answer in radians in terms of \( \pi \). If there is more than one solution, separate them with commas. \( x=\square \)

\( \begin{array}{lllll}7 / 8 & \text { A) } 21 / 24 & \text { B) } 1 / 2 & \text { C) } 1 / 2 & \text { D) } 2 / 1 \\ 1 / 2 & \text { A) } 7 / 20 & \text { B) } 2 / 1 & \text { C) } 8 / 16 & \text { D) } 3 / 4\end{array} \)

Perimetro axpresen en la unidad indicada a. \( 0,05 \mathrm{~km}= \) b. \( 2,5 \mathrm{dm}= \) c. \( 1235 \mathrm{~cm}= \) d. \( 3500 \mathrm{~mm}= \) e. \( 7,5 \mathrm{hm}= \) f. \( 0,034 \mathrm{~km}= \)

(a) Factor the polynomial over the set of real nur \( f(x)=x^{4}-4 x^{3}+7 x^{2}-16 x+12 \) The factorization over the set of real numbers is \( f(x)= \)