I need help with this

Danielle earns a 7.25% commission on everything she sells at the electronics store where she works. she also earns a base salary of $750 per week. what were her sales last week if her total earnings for the week were $1,076.25?

What is the volume of a cone with a height of 6 cm in the radius of 2 cm

Explain how you can find the missing fraction in 3 4/5 / (blank) 2 5/7. then find the missing fraction.