How does a perpendicular bisector divide a triangle

What does it mean by solve the exponential equation for x?

Brent works part-time at a clothing store. he earns an hourly wage of $15. if he needs to earn more than $45 in a day and works for x hours a day, which inequality represents this situation? a. 15x > 45 b. 15x < 60 c. x > 60 d. 15x < 45 e. x < 60

Select all the correct answers. what is 221,000,000,000,000,000,000 expressed in scientific notation?