Apet sitter wants to advertise in several local newspapers. if the newspaper charges $20 per advertisement, how much will the pet sitter have to spend if she wants to place at least four ads?
a. write an inequality to represent the situation using x to represent the total amount of money that the pet sitter spends on ads
b. solve the inequality by isolating the variable. show all work leading to answer.
c. graph the solution on a number line
d. write a sentence to explain what the solution to the inequality represents