You have been given 5.00 L of well water and asked to analyze for the presend of arsenic. You test a 75.00 mL aliquot of the water and determine a concentration of \( 1.45 \times 10^{-5} \mathrm{M} \) (in the 75 mL ). (a) How many moles of As are present in the entire 5.00 L of water? (b) What is the concentration (molarity) of As in the well water?

\[ y=x^{2}(3-x)+\frac{1}{2} \] Find the gradient function of the curve. Cari fungsi kecerunan bagi lengkung itu.

Question 2 An exponential function \( f(x)=a b^{x} \) passes through the points \( (0,6) \) and \( (3,162) \). What are the values of \( a \) and \( b \) ? \( a=\square \) \( b=\square \) Question Help: Video Submit Question

A person has the following fixed income and expenses: Income: \( \$ 7226.93 \); house payment: \( \$ 1939.48 \); utilities: \( \$ 403.77 \); car payment: \( \$ 221.38 \); insurance: \( \$ 143.34 \); cell phone and Internet: \( \$ 133.88 \); furniture loan payment: \( \$ 92.75 \) How much is left per month for variable expenses and luxuries? Round to the nearest cent. The person has \( \$ \square \) left for variable expenses and luxuries.

Factor the binomial completely. \[ 125 a^{4}-8 a b^{3} \]

\( 54 \times 740 m \ell = \ldots \ldots \ldots \ldots \ldots \ldots \ldots \ldots \)