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Questions in mathematics

[Done] Mc. Green orders some cookies from a local youth group. Using his order form shown below, complete the last column to find the total to be paid. \begin{tabular}{|l|l|l|l|} \hline Quantity & Description & Unit Price & Total of Line \\ \hline 1 & Krispy Kosmos & $2.89 & $ \\ \hline 2 & Chewy Chocos & $3.19 & $ \\ \hline 1 & Gooey Globs & 299 & $ \\ \hline & & & \\ \hline & & Total & 5 \\ \hline & & 5.2% tax & $ \\ \hline & & Total to be paid & $ \\ \hline \end{tabular} A. $9.54 B. $12.26 C. $1290 D. $18.64

[Done] \begin{tabular}{|l|} \hline $3 \times 1.3$ \\ \hline $4 \times 1.3$ \\ \hline $5 \times 1.3$ \\ \hline \end{tabular}

[Done] Suppose that [tex]f(x, y)=2 x^4+2 y^4-2 x y[/tex] Then the minimum is $\square$

[Done] Write $1.888 \ldots$ as a mixed number.

[Done] The time that it took four students in Mrs. Alvarez's class to solve a Rubik's cube is listed in the table below. \begin{tabular}{|c|c|} \hline MITCHELL & 3 min. 33 seconds \\ \hline ERIN & 3 min. 5 seconds \\ \hline CHELSEA & 2 min. 55 seconds \\ \hline FINN & 2 min. 59 seconds \\ \hline \end{tabular} List the students' names in order beginning with the fastest time.

[Done] To predict future enrollment in a school district, fifty households within the district were sampled and asked to disclose the number of children under the age of five living in the household. The results of the survey are presented in the table. Complete parts (a) through (c) below. \begin{tabular}{cc} \hline \multicolumn{2}{|l}{\begin{tabular}{l} Number of Children Number of under 5 \end{tabular}} \\ \hline 0 & \begin{tabular}{c} Households \\ \hline 1 \end{tabular} \\ \hline 2 & 14 \\ \hline 3 & 16 \\ \hline 4 & 16 \\ \hline \end{tabular} (a) Construct a relative frequency distribution of the data. \begin{tabular}{c|c} \hline \begin{tabular}{l} Number of Children under 5 \end{tabular} & \begin{tabular}{l} Relative Frequency \end{tabular} \\ \hline 0 & 0.08 \\ \hline 1 & 0.2 \\ \hline 2 & 0.32 \\ \hline 3 & 0.32 \\ \hline 4 & 0.08 \\ \hline \end{tabular} (Type integers or decimals. Do not round.)

[Done] Find the instantaneous rate of change of [tex]f(x)=-x^2-7 x[/tex] when [tex]x=4[/tex].

[Done] Claire wants to take out a small personal loan to renovate her kitchen. She borrows $3,000. Her loan has an annual compound interest rate of 15%. The loan compounds once each year. When you calculate Claire's debt, be sure to use the formula for annual compound interest. [tex]A=P\left(1+\frac{r}{n}\right)^{n t}[/tex] If Claire does not make any payments, how much will she owe after ten years?

[Done] Simplify $\frac{b^{12}}{b^5}$.

[Done] $f(x)=3-2 x$ and $g(x)=\frac{1}{x+5}$, what is the value of $\left(\frac{1}{g}\right)(8) ?