Sarai earns $380 per week for the 40 hours she works plus $20 commission on each new cell phone she sells. Write an equation to determine how many new cell
phones she sold to earn $800 last week

Atriangle has sides with lengths of 10 yards, 13 yards, and 18 yards. is it a right triangle?

1. are the triangles similar and if so why? what is the value of x? show your work.

The marriott family bought a new apartment three years ago for $65,000. the apartment is now worth $86,515. assuming a steady rate of growth, what was the yearly rate of appreciation? what is the percent of the yearly rate of appreciation?