Lisa is 7 years older than her sister annabelle. which equation relates lisa's age (a) to annabelle's age (b)?

In the diagram, bc¯¯¯¯¯∥de¯¯¯¯¯ . what is ce ? enter your answer in the box.

Last month, leonhard euler's watch kiosk at the mall had total sales of $9,489. merchandise totaling $225 was returned. the goods that were sold cost leonhard euler's $5,481. operating expenses for the moth were $992. what was the gross profit on sales?

The cost of a concert ticket last week was $60 this week a concert ticket is $75 what is the percent increase of the ticket from last week to this week