91Ó°ÊÓ

Mindy takes a daily walk of \(2 \frac{1}{2}\) miles. One day a thunderstorm forced her to stop her walk after \(\frac{3}{4}\) of a mile. By hov much was her walk shortened that day?

Blake Scott leaves \(\frac{1}{4}\) of his estate to the Boy Scouts, \(\frac{2}{5}\) to the local cancer fund, and the rest to his church. What fractional part of the estate does the church receive?

For Problems \(93-106\), evaluate each algebraic expression for the given values of the variables. $$ -x^{2}+y^{2} \text { for } x=-2 \text { and } y=6 $$

A triangular plot of ground measures \(14 \frac{1}{2}\) yards by \(12 \frac{1}{3}\) yards by \(9 \frac{5}{6}\) yards. How many yards of fencing are needed to enclose the plot?

For Problems \(93-106\), evaluate each algebraic expression for the given values of the variables. $$ -a^{2}-3 b^{3} \quad \text { for } a=-6 \text { and } b=-1 $$

For her exercise program, Laian jogs for \(2 \frac{1}{2}\) miles, then walks for \(\frac{3}{4}\) of a mile, and finally jogs for another \(1 \frac{1}{4}\) miles. Find the total distance that Lian covers.

For Problems \(93-106\), evaluate each algebraic expression for the given values of the variables. $$ -a^{3}+3 b^{2} \text { for } a=-3 \text { and } b=-5 $$

For Problems \(93-106\), evaluate each algebraic expression for the given values of the variables. $$ y^{2}-3 x y \text { for } x=0.4 \text { and } y=-0.3 $$

Give a step-by-step description of the best way to add the rational numbers \(\frac{3}{8}\) and \(\frac{5}{18}\).

For Problems \(93-106\), evaluate each algebraic expression for the given values of the variables. $$ x^{2}+5 x y \quad \text { for } x=-0.2 \text { and } y=-0.6 $$