Homework 13: Writing and Solving Inequalities in One Variable (Alg1.2.20)
Problem 1
Solve 2x<10.
Explain how to find the solution set.
Problem 2
A cell phone company offers two texting plans.
People who use plan A pay 10 cents for each text sent or received. People who use plan B pay 12 dollars per month, and then pay an additional 2 cents for each text sent or received. Write an inequality to represent the fact that it is cheaper for someone to use plan A than plan B. Use to represent the number of texts they send.
Solve the inequality.
Problem 3
Clare made an error when solving -4x+3<23.
Describe the error that she made.
Problem 4
What is the solution set of the inequality ?