5) Vertex angle A of isosceles triangle ABC measures 70°. What is the measure, in degrees, of an exterior angle at B?

What signals you that factoring by grouping is the best method to use when factoring a problem?

Astore has clearance items that have been marked down by 60%. they are having a sale, advertising an additional 55% off clearance items. what percent of the original price do you end up paying?

Damon makes 20 cups of lemonade by mixing lemon juice and water. the ratio of lemon juice to water is shown in the tape diagram. lemon juice\text{lemon juice} lemon juice water\text{water} water how much lemon juice did damon use in the lemonade? cups