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Questions in mathematics

[Answered] What is the value of the expression below when [tex]$x=2$[/tex] and [tex]$y=7$[/tex]? [tex]$6 x+8 y$[/tex]

[Answered] Which expression is equivalent to $\left(\frac{4^{\frac{1}{3}} \cdot 4^{\frac{2}{6}}}{4^{\frac{5}{6}}}\right)^{\frac{3}{11}}$ ? A. $\left(\frac{1}{4}\right)^{-\frac{3}{66}}$ B. $\left(\frac{1}{4}\right)^{\frac{3}{66}}$ C. $\left(\frac{1}{4}\right)^{\frac{1}{11}}$ D. $\left(\frac{1}{4}\right)^{-\frac{1}{11}}$

[Answered] Casey bought sandwiches and bags of chips. Each sandwich cost three times as much as a bag of chips. She bought 5 sandwiches for $6 each and spent $42. How many bags of chips did she buy?

[Answered] Evaluate the expression using the order of operations. [tex]$5^3+(12-2)^2=$[/tex]

[Answered] [tex]x^3+3 x^2-4 x \textless \ 12[/tex]

[Answered] $3 y-2 \frac{3}{4}\left(\frac{1}{2} y-4\right)=-2$

[Answered] What is the limit as x approaches 1 for the rational function [tex]$\frac{x^4-3 x^2+2 x-7}{x-2}$[/tex]?

[Answered] Select the correct answer. A company manufactures acoustic guitars. The table shows the number of units that the company sold each month over a nine-month period beginning in January. \begin{tabular}{|l|c|c|c|c|c|c|c|c|c|} \hline Month, $x$ & 1 & 2 & 3 & 4 & 5 & 6 & 7 & 8 & 9 \ \hline Units, $y$ & 150 & 300 & 380 & 425 & 425 & 480 & 520 & 550 & 575 \ \hline \end{tabular} Which equation best models the situation? A. $y=148.4 \sqrt{x-1}-154$ B. $y=148.4 \sqrt{x-1}+154$ C. $y=46.4 x+191.7$ D. $y=-46.4 x+191.7$

[Answered] [tex]$\frac{2 x}{3}(12 x+18)$[/tex]

[Answered] If $TU = 10$, $UV = x + 7$, and $TV = 3x - 15$, what is $TV$?