Solving Inequalities with One Variable

Would you rather spend the night at the zoo or spend the night at the library?

The sides of a triangle are (2t+1), (4t-3) and 5t-6). Which expression represents the PERIMETER of the triangle?

Look at the inequality below, how can it be simplified?

For the first 40 hours of work each week, Mr. Ericson earns $600 For each hour over 40 hours, Mr. Ericson earns $22.50 an hour. The company can pay each employee up to $960 per week. What is the maximum number of hours Mr. Ericson can work and still avoid going over the weekly budget?

Twelve less than 5 times a number is greater than or equal to 6 more than twice a number. What is the solution to this inequality?