Solve
-Bruce Can Clear a Weekly Profit from His House $\begin{array}{c|c|c|c|c}\mathrm{x} & 10 & 20 & 30 & 40 \\\hline \mathrm{y} & 30.75 & & 235.75 & 338.25\end{array}$

Essay

Solve.
-Bruce can clear a weekly profit from his house cleaning business according to the formula y = 10.25 x - 71.75,
where y is the profit in dollars and x is the number of hours on the job.
a. Complete the following table and graph the results. $\begin{array}{c|c|c|c|c}\mathrm{x} & 10 & 20 & 30 & 40 \\\hline \mathrm{y} & 30.75 & & 235.75 & 338.25\end{array}$
$$\text { House Cleaning Profits }$$
b. Find the number of hours Bruce must work to achieve a profit of $225.50