Exam 2: Solving Equations and Inequalities

Solve the problem. -In order for a chemical reaction to remain stable, its Celsius temperature must be no more than $137.94^{\circ} \mathrm{C}$ . Find the Farenheit temperatures at which the reaction will remain stable. $\left(\mathrm{F}=\frac{9}{5} \mathrm{C}+32\right)$

Solve the problem. -During one year, the Green's real estate bill included $\$ 308$ for city services. The fire department received $38 \%$ of that amount. How much money went to the fire department?

Solve the equation using the addition principle. - $-18=a-24$

Solve the problem. -Find the measure of each angle in the triangle.

Solve using the multiplication principle. - $-8 \mathrm{x}=-24$

Solve using the multiplication principle. - $-60=4 z$

Solve the problem. Round to the nearest tenth of a percent. -What percent of 112 is 17.4 ?

Solve the problem. -Jennifer's annual salary was $\$ 23,000$ last year and increased 37\% this year. Find Jennifer's current annual salary.

Solve the problem. -A square plywood platform has a perimeter which is 10 times the length of a side, decreased by 24 . Find the length of a side.

Solve. - $0.8(5 x+15)=2.2-(x+3)$

Determine whether the given number is a solution of the inequality. - $x \geq 15,13$

Solve using the multiplication principle. - $-\frac{8}{9} t=\frac{5}{7}$

Graph the inequality. - $x>-6$

Solve. - $13.9 \mathrm{x}+11.2 \mathrm{x}=401.6$

Solve. - $\mathrm{a}+\mathrm{b}=\mathrm{s}+\mathrm{r}$ for $\mathrm{s}$

Solve using the multiplication principle. - $\frac{m}{-6}=25$

Solve the problem. -At the end of the day, a storekeeper had $\$ 1155$ in the cash register, counting both the sale of goods and the sales tax of 5\%. Find the amount that is the tax. Round to the nearest dollar if necessary.

Solve using the multiplication principle. - $-44.9 m=-583.7$

Solve. - $A=\frac{1}{2} b h$ for $h$

Solve the problem. Round to the nearest tenth of a percent. -What percent of 94 is 47 ?