Diana went shopping and purchased 4.2 pounds of peaches at $2.35 per pound and 3.8 pounds of blueberries at $2.50 per pound. what was the total amount of money diana spent on the peaches and blueberries?

Refer to interactive solution 17.45 to review a method by which this problem can be solved. the fundamental frequencies of two air columns are the same. column a is open at both ends, while column b is open at only one end. the length of column a is 0.504 m. what is the length of column b?

Which expression is equivalent to the expression shown?

Ben is three times as old as samantha, who is two years older than half of michel's age. if michel is 12. how old is ben?