91Ó°ÊÓ

Solve each equation or inequality. $$|2 x+1| \leq 0$$

Find each product. Write the answer in standard form. $$i(3-4 i)(3+4 i)$$

Celsius and Fahrenheit Temperatures In the met- ric system of weights and measures, temperature is measured in degrees Celsius (" \(^{\circ}\) C) instead of degrees Fahrenheit \(\left(^{\circ} \mathrm{F}\right) .\) To convert between the two systems, we use the equations $$ C=\frac{5}{9}(F-32) \quad \text { and } \quad F=\frac{9}{5} C+32 $$ In each exercise, convert to the other system. Round answers to the nearest tenth of a degree if necessary. $$50^{\circ} \mathrm{F}$$

Solve each equation. $$\sqrt[4]{x^{2}+6 x}=2$$

Solve each equation or inequality. $$|3 x+2| \leq 0$$

Celsius and Fahrenheit Temperatures In the met- ric system of weights and measures, temperature is measured in degrees Celsius (" \(^{\circ}\) C) instead of degrees Fahrenheit \(\left(^{\circ} \mathrm{F}\right) .\) To convert between the two systems, we use the equations $$ C=\frac{5}{9}(F-32) \quad \text { and } \quad F=\frac{9}{5} C+32 $$ In each exercise, convert to the other system. Round answers to the nearest tenth of a degree if necessary. $$77^{\circ} \mathrm{F}$$

Solve each equation using the quadratic formula. $$(3 x+2)(x-1)=3 x$$

Solve each equation or inequality. $$|3 x+2|>0$$

Celsius and Fahrenheit Temperatures In the met- ric system of weights and measures, temperature is measured in degrees Celsius (" \(^{\circ}\) C) instead of degrees Fahrenheit \(\left(^{\circ} \mathrm{F}\right) .\) To convert between the two systems, we use the equations $$ C=\frac{5}{9}(F-32) \quad \text { and } \quad F=\frac{9}{5} C+32 $$ In each exercise, convert to the other system. Round answers to the nearest tenth of a degree if necessary. $$100^{\circ} \mathrm{F}$$

Solve each equation. $$x^{3 / 2}=125$$